| Organization | Links | Recs | Related | Infra | Image |
|---|
| R. D. Nuttall Co | 2 | 8 | 1 | | |
| R. H. Macy and Co | 1 | | | | |
| R. Hoe and Co | 1 | 9 | | | |
| R. J. Reynolds Tobacco Co | 1 | | | | |
| R. L. Polk and Co | 1 | 2 | | | |
| R. Massey Trucking Co | 1 | | | | |
| R. T. Crane & Bro | 1 | | | | |
| Racine and Mississippi Railroad | 1 | 29 | | | |
| Racine-Sattley Co | 1 | 8 | | |  |
| Radio Corporation of America | 1 | | | | |
| Rahway Gas Light Co | 1 | 11 | | | |
| Rail Joint Co | 3 | 19 | | | |
| Railroad Commission | 1 | 21 | | | |
| Railway Age | 1 | 8 | | | |
| Railway and Light Securities Co | 7 | 15 | | | |
| Railway Steel Spring Co | 4 | 36 | | |  |
| Rainbow Lode Development Co | 1 | 5 | | | |
| Raleigh and Gaston Railroad | 3 | 27 | | | |
| Raleigh Banking and Trust Co | 2 | 4 | | |  |
| Raleigh NC North Carolinian | 1 | 1 | | | |
| Ralph Lauren Corporation | 1 | | | | |
| Randsburg Railroad | 1 | 6 | | | |
| Rantoul Railroad | 2 | 3 | | | |
| Rapahannock Garden Club | 1 | | | | |
| Rapid Transit Subway Construction Co | 5 | 18 | | | |
| Raquette Lake Railway | 1 | 4 | | | |
| Rathbun Knitting Co | 1 | 5 | | | |
| Raven Award | 1 | | | | |
| Raven Run Coal Co | 2 | 4 | | | |
| Ray Consolidated Copper Co | 1 | 23 | | | |
| Ray Hercules Copper Co | 1 | 11 | | | |
| Raymond Lead Co | 1 | 3 | | | |
| Raytheon Co | 1 | | | | |
| Reading and Columbia Railroad | 5 | 23 | | | |
| Reading Co | 6 | 19 | 3 | | |
| Reading Paper Mills | 1 | 2 | | | |
| Reading-Eagle Times | 1 | | | | |
| Real Estate Associates | 3 | 3 | | | |
| Real Estate Exchange and Auction Board | 7 | 27 | | | |
| Real Estate Title Insurance and Trust Co of Philadelphia | 1 | 21 | | |  |
| Real Estate Trust Co | 3 | 37 | | | |
| Real Estate Trust Co of New York City | 1 | 25 | | | |
| Real Estate Trust Co of Philadelphia | 2 | 23 | | |  |
| Realty Associates | 1 | 27 | | | |
| Realty Co of Maine | 2 | 4 | | | |
| Reaney, Neafie and Levy Co | 1 | | | | |
| Reaney, Son and Archbold | 1 | | 1 | 🚂 | |
| Rebecca Lodge | 1 | | | | |
| Rebekah lodge | 3 | | | | |
| Record Publishing Co | 1 | 7 | | | |
| Recorder | 2 | | | | |
| Red Cross | 2 | | | | |
| Red Cross Gallon Club | 1 | | | | |
| Red Metal Mining Co | 1 | 6 | 1 | | |
| Reference Handbook of Medical Sciences | 2 | 3 | | | |
| Register of the Treasury | 3 | | | | |
| Reliance Cement Co | 1 | 8 | 1 | | |
| Reliance Co | 1 | 4 | | | |
| Reliance Insurance Co | 2 | 12 | | | |
| Remington Arms Co | 1 | 6 | | | |
| Rensselaer and Saratoga Railroad | 2 | 39 | 1 | 🚂 | |
| Rensselaer Society of Engineers | 1 | | | | |
| Reorganized Atlanta Mines Co | 1 | 6 | | | |
| Reorganized Blue Bull Mining Co | 1 | 5 | | | |
| Reorganized Booth Mining Co of Goldfield | 1 | 3 | | | |
| Reorganized Kewanas Gold Mining Co | 1 | 4 | | | |
| Reporter of Decisions of the Supreme Court | 5 | | | | |
| Republic Iron and Steel Co | 5 | 55 | 1 | |  |
| Republic Iron and Steel Co of New Jersey | 2 | 13 | | | |
| Republic Iron Co | 1 | 7 | | | |
| Republican National Committee | 24 | | | | |
| Republican Party | 9 | | | | |
| Retired Officers Association | 1 | | | | |
| Revere House | 1 | 6 | | | |
| Revere Rubber Co | 4 | 15 | 1 | |  |
| Revere Sugar Refining Co | 1 | 6 | | | |
| Reynoldsville and Falls Creek Railroad | 3 | 21 | | | |
| Rhode Island Citizen | 1 | 2 | | | |
| Rhode Island Co | 1 | 9 | | | |
| Rhode Island Coal Co | 2 | 8 | | | |
| Rhode Island Cranberry Co | 1 | 5 | | | |
| Rhode Island Electric Protective Co | 1 | 10 | | | |
| Rhode Island Foundry and Machine Co | 1 | 5 | | | |
| Rhode Island Heritage Hall of Fame | 9 | | | | |
| Rhode Island Hospital Trust Co | 7 | 35 | | | |
| Rhode Island Insurance Co | 6 | 26 | | | |
| Rhode Island Malleable Iron Works | 1 | 5 | | | |
| Rhode Island Metropolitan Park Commission | 1 | 1 | | | |
| Rhode Island Perkins Horse Shoe Co | 1 | 15 | | | |
| Rhode Island Power Transmission Co | 1 | 3 | | | |
| Rhode Island Processing Co | 1 | 2 | | | |
| Rhode Island Safe Deposit Co | 4 | 25 | | | |
| Rhode Island School of Design | 1 | 3 | | | |
| Rhode Island Soldiers and Sailors Historical Society | 1 | 1 | | | |
| Rhode Island Tool Co | 1 | 4 | | | |
| Rhodes scholar | 5 | | | | |
| Richardson & Wayland Electric | 1 | | | | |
| Richelieu and Ontario Navigation Co | 1 | 12 | | | |
| Richmond and Allegheny Railroad | 3 | 29 | | | |
| Richmond and Danville Railroad | 15 | 163 | | | |
| Richmond and Manchester Railway | 1 | 3 | | | |
| Richmond and Petersburg Railroad | 1 | 28 | | | |
| Richmond and York River Railroad | 2 | 2 | | | |
| Richmond Christian Advocate | 1 | 2 | | | |
| Richmond Enquirer | 1 | | | | |
| Richmond Hill and Queens County Gas Light Co | 1 | 5 | | | |
| Richmond Iron Works | 1 | 4 | | | |
| Richmond Light and Power Co | 1 | 6 | | | |
| Richmond Light and Railroad | 2 | 9 | | | |
| Richmond Light, Heat and Power Co | 2 | 7 | 1 | | |
| Richmond Locomotive Works | 2 | 13 | 1 | | |
| Richmond Whig | 1 | | | | |
| Richmond, Fredericksburg and Potomac Railroad | 5 | 36 | | | |
| Rico-Wellington Mining Co | 1 | 9 | | | |
| Riggs National Bank of Washington | 6 | 19 | | | |
| Rio Grande Junction Railway Co | 1 | 7 | | | |
| Rio Grande Western Railway | 2 | 50 | | | |
| Rittenhouse Trust Co | 1 | 21 | | | |
| River Spinning Co | 1 | 5 | | | |
| Riverdale and Lake Michigan Railroad | 1 | 7 | | | |
| Riverhead Savings Bank | 1 | | | | |
| Riverside & Dan River Mills | 1 | | | | |
| Riverside Mills | 1 | 3 | | | |
| Riverton Savings Bank | 1 | 1 | | | |
| Roanoke News | 1 | 1 | | | |
| Roanoke Tar River Steamboat Co | 2 | 4 | | | |
| Roanoke Times | 1 | | | | |
| Robert Frost Medal | 3 | | | | |
| Robert Grace Contracting Co | 1 | 2 | | | |
| Robins Conveying Belt Co | 1 | 12 | | | |
| Robinson Seed and Plant Co | 2 | 17 | | |  |
| Rochester and Lake Ontario Water Co | 1 | 9 | | | |
| Rochester and Pittsburgh Coal and Iron Co | 1 | 11 | | | |
| Rochester and Pittsburgh Railroad | 2 | 22 | | | |
| Rochester and State Line Railroad | 3 | 11 | | | |
| Rochester and Suburban Railway | 1 | 2 | | | |
| Rochester Broncos | 1 | 20 | | | |
| Rochester Democrat and Chronicle | 1 | 19 | | | |
| Rochester Electric Railroad | 1 | 4 | | | |
| Rochester Nevada Silver Mines Co of Nevada | 1 | 12 | | | |
| Rochester Railway and Light Co | 2 | 30 | 1 | | |
| Rochester Savings Bank | 1 | 3 | | | |
| Rochester Telephone Co | 1 | 17 | | | |
| Rochester, Syracuse and Utica Telephone Co | 1 | 7 | | | |
| Rock Island Co | 4 | 16 | 1 | | |
| Rock Island Railroad | 1 | 7 | | | |
| Rockefeller Foundation | 1 | 12 | | | |
| Rockford Electric Co | 1 | 5 | | | |
| Rockford Gas Light and Coke Co | 1 | 8 | 1 | | |
| Rockingham NC Rocket | 1 | 1 | | | |
| Rockingham Power Co | 1 | 6 | | | |
| Rocky Mountain Bell Telephone Co | 1 | 16 | 1 | | |
| Rogers Locomotive Works | 1 | 8 | 1 | |  |
| Rogers-Brown Iron Co | 1 | 7 | | | |
| Rome Merchant-Iron Mill | 1 | 5 | | | |
| Rome, Watertown and Ogdensburg Railroad | 4 | 76 | 1 | | |
| Rondout and Oswego Railroad | 1 | | | | |
| Rosendale Volunteer Fire Department | 1 | | | | |
| Roses | 1 | | | | |
| Rotary Club | 22 | | | |  |
| Rough Riders | 2 | | | |  |
| Roxbury Central Wharf | 2 | 7 | | | |
| Royal Arcanum | 1 | | | | |
| Royal Arch Masons | 1 | | | | |
| Royal Astronomical Society | 4 | 34 | | | |
| Royal Baking Powder Co | 1 | 18 | | | |
| Royal Gem Mills | 1 | 4 | | | |
| Royal Geographic Society | 3 | 11 | | | |
| Royal Justice | 1 | | | | |
| Royal Neighbors | 1 | | | | |
| Royal Scottish Society of Arts | 1 | | | | |
| Royal Society of London | 8 | | | | |
| Royal Weaving Co | 2 | 7 | | | |
| Rubber Goods Manufacturing Co | 2 | 32 | 1 | | |
| Rubber Manufacturers Mutual Insurance Co | 1 | 9 | | | |
| Rumford Falls and Buckfield Railroad | 1 | 9 | | | |
| Russell Co | 1 | 5 | | | |
| Rutland and Burlington Railroad | 1 | 27 | | | |
| Rutland and Whitehall Railroad | 1 | 5 | 1 | | |
| Rutland Railroad | 14 | 71 | 1 | | |
| Rutland Transit Co | 2 | 8 | | | |
| Rutland VT News | 1 | 1 | | | |
| R. & R. News Co | | | | | |
| R. A. Rowan and Co | | 30 | | | |
| R. and R. Magazine Agency | | | | | |
| R. and W. Jenkinson Co | | 3 | | | |
| R. B. Armstrong Co | | 12 | | | |
| R. B. McDanel Co | | 4 | | | |
| R. Beskow Optical Co | | 5 | | | |
| R. C. Cole Co | | 3 | | | |
| R. C. Mitchell Co | | 6 | | | |
| R. C. Pomeroy | | | | | |
| R. D. Pope | | | | | |
| R. D. Wood and Co | | 4 | | | |
| R. Exploration Co | | 6 | | | |
| R. F. Conway Co | | 4 | | | |
| R. Friedlander and Co | | 3 | | | |
| R. G. Dun and Co | | 39 | | | |
| R. H. Herron Co | | 17 | | | |
| R. H. White Co | | 4 | | | |
| R. Hasselgren and Co | | 3 | | | |
| R. Herbst Co | | 2 | | | |
| R. J. Bonde and Sons | | | | | |
| R. J. Ederer Co | | 3 | | | |
| R. J. Kittredge and Co | | 3 | | | |
| R. J. Munhall Lumber Co | | 3 | | | |
| R. Klein News Co | | | | | |
| R. L. Bryan Co | | | | | |
| R. L. Craig and Co | | 29 | | | |
| R. L. Perry Co | | 3 | | | |
| R. M. Eddy Foundry Co | | 2 | | | |
| R. O. Evans and Co | | 2 | | | |
| R. P. Smith and Son | | 2 | | | |
| R. P. Smith and Sons Co | | 3 | | | |
| R. R. Bowker Co | | 2 | | | |
| R. R. Donnelley and Sons Co | | 3 | | | |
| R. R. Supply Co | | 2 | | | |
| R. Ramsey Mebane | | | | | |
| R. S. Bacon Veneer Co | | 2 | | | |
| R. S. Brine Transportation Co | | 6 | | | |
| R. T. Peck and Co | | | | | |
| R. T. Van Tine | | | | | |
| R. V. Wagner and Co | | 3 | | | |
| R. W. Pridham Co | | 12 | | | |
| R. W. Roseberry Co | | | | | |
| R. Wallace and Sons Manufacturing Co | | 2 | | | |
| R. Walter Peterson and Co | | 2 | | | |
| R. Williamson and Co | | 3 | | | |
| Raccoon Mining and Manufacturing Co | | 2 | | | |
| Racine Gas Light Co | | 2 | | | |
| Racine Legion | | 49 | | | |
| Racine Tornadoes | | 24 | | | |
| Radford Water-Power Co | | 4 | | | |
| Radiant Mining and Reduction Co | | 4 | | | |
| Radium Co of Colorado | | 7 | | | |
| Radium Spray Co | | 3 | | | |
| Raffloer, Erbsloh and Co | | 5 | | | |
| Rafu Hardware and Sewing Mach Co | | 3 | | | |
| Ragan NE News | | 2 | | | |
| Rahway NJ Union Democrat | | 1 | | | |
| Raider Mining Co | | 7 | | | |
| Rail and River Coal Co | | 8 | | | |
| Railroad and Steamship Advertising Co | | 5 | | | |
| Railroad Employee | | 1 | | | |
| Railroad Equipment Corporation | | 3 | | | |
| Railroad Historical Co | | | | | |
| Railroad News Co | | 4 | | | |
| Railroad Securities Co | | 15 | | | |
| Railroad Time Advertising Co | | 4 | | | |
| Railroad Wharf and Storage Co | | 5 | | | |
| Railroads and Power Development Co | | 4 | | | |
| Railroads War Board | | 5 | | | |
| Railway Age and Northwestern Railroader | | 2 | | | |
| Railway Appliances Co | | 2 | | | |
| Railway Automatic Sales Co | | 10 | | | |
| Railway Electric Power Co | | 8 | | | |
| Railway List Co | | 3 | | | |
| Railway Materials Co | | 2 | | | |
| Railway Review | | 2 | | | |
| Railway Supply Foundry Co | | 2 | | | |
| Railway Transfer Company of Minneapolis | | 6 | | | |
| Railways Co General | | 12 | | | |
| Railways Company General | | 13 | | | |
| Rainbow Divide Mining Co | | 7 | | | |
| Rainbow Lead and Zinc Co | | 4 | | | |
| Rainbow Mining and Milling Co | | 6 | | | |
| Rainier Bottling Works | | 4 | | | |
| Rainier Mines Co | | 8 | | | |
| Raisin River Railroad | | 7 | | | |
| Raleigh and Augusta Air Line Railroad | | 7 | | | |
| Raleigh and Cape Fear Railway | | 3 | | | |
| Raleigh and Western Railway | | 7 | | | |
| Raleigh Gas Co | | 3 | | | |
| Raleigh Hotel | | | | | |
| Raleigh NC Caucasian | | 1 | | | |
| Raleigh NC Christian Advocate | | 3 | | | |
| Raleigh NC Gazette | | 1 | | | |
| Raleigh NC Times | | 4 | | | |
| Raleigh NC Truth | | 1 | | | |
| Raleigh News Agency | | | | | |
| Raleigh State Bank | | 1 | | | |
| Raleigh Street Railway | | 3 | | | |
| Ralph C. Watrous Co | | 3 | | | |
| Ralphs Grocery Co | | 19 | | | |
| Ralston Mining Co | | 5 | | | |
| Ralston Printing Co | | 5 | | | |
| Ralston Steel Car Co | | 9 | | | |
| Ramapo Water Co | | 7 | | | |
| Rambler Consolidated Mines Co | | 6 | | | |
| Rambler Copper and Platinum Co | | 5 | | | |
| Rambler-Cariboo Mines | | 9 | | | |
| Rampart Mountain Mining Co | | 3 | | | |
| Rams Horn | | 2 | | | |
| Ramsey IL News-Journal | | 2 | | | |
| Ramsey NJ Journal | | 1 | | | |
| Rancho La Brea Oil Co | | 5 | | | |
| Rand Avery Supply Co | | 7 | | | |
| Rand Divide Mining Co | | 4 | | | |
| Rand, McNally and Co | | 12 | | | |
| Randfontein Central Gold Min. Co | | 3 | | | |
| Randolph Argus | | 1 | | | |
| Randolph Box and Label Co | | 2 | | | |
| Randolph Fruit Co | | 8 | | | |
| Randolph Gold Mining, Milling and Tunnel Co | | 4 | | | |
| Randolph VT Herald and News | | 1 | | | |
| Randolph-Gemmill Development Co | | 3 | | | |
| Rangeley ME Lakes | | 2 | | | |
| Rangeley Water Co | | 5 | | | |
| Ranier Development Co | | 4 | | | |
| Rankin Creek Placer Mines Co | | 2 | | | |
| Rankin IL Independent | | 3 | | | |
| Rankin Improvement Co | | 5 | | | |
| Ransom and Randolph Co | | 2 | | | |
| Ranson Copper Mining Co of Ontario | | 2 | | | |
| Rantoul IL Press | | 4 | | | |
| Raphael Tuck and Sons | | | | | |
| Rapid City Gas Light Co | | 8 | | | |
| Rapid City Street Railway | | 3 | | | |
| Rapid River and Eastern Railroad | | 6 | | | |
| Rapid Transit Railway | | 23 | | | |
| Rappahannock Times | | 1 | | | |
| Rare Metals Co | | 4 | | | |
| Rare Metals Ore Co | | 5 | | | |
| Raritan and Delaware Bay Railroad | | 24 | | | |
| Raritan IL Reporter | | 1 | | | |
| Raritan River Railroad | | 5 | | | |
| Rathbone, Sard and Co | | 8 | | | |
| Rathbun Co | | 2 | | | |
| Rathfon Reduction Works | | 1 | | | |
| Raton Water Works Co | | 1 | | | |
| Ratrut Basin Tin Dredging Co | | 3 | | | |
| Raven and Beacon Hill Gold Mining Co | | 3 | | | |
| Raven Coal Co | | 3 | | | |
| Raven Copper Co | | 9 | | | |
| Raven Mining Co | | 3 | | | |
| Ravenna Gas and Electric Light Co | | 10 | | | |
| Ravenswood Exchange Bank | | 6 | | | |
| Ravenswood Safety Deposit Vaults Co | | 5 | | | |
| Ravenswood, Spencer and Glenville Railroad | | 4 | | | |
| Rawley Mining Co | | 5 | | | |
| Ray Auto Co | | 3 | | | |
| Ray Boston Copper Co | | 6 | | | |
| Ray Broken Hill Mining Co | | 5 | | | |
| Ray Central Copper Co | | 4 | | | |
| Ray Central Copper Mining Co | | 11 | | | |
| Ray County Savings Bank | | 2 | | | |
| Ray Printing Co | | 7 | | | |
| Ray Silver Lead Mining Co | | 5 | | | |
| Ray Verde Copper Co | | 3 | | | |
| Ray-Arizona Copper Co | | 3 | | | |
| Ray-Jefferson Mining Co | | 6 | | | |
| Rayfield Nigeria Tin Fields | | 3 | | | |
| Rayland Coal Co | | 2 | | | |
| Raymond and Whitcomb Co | | 3 | | | |
| Raymond Brothers Impact Pulverizer Co | | 6 | | | |
| Raymond Concrete Pile Co | | 4 | | | |
| Raymond Consolidated Silver and Copper Mining Co | | 6 | | | |
| Raymond IL Independent | | 2 | | | |
| Raymond State Bank of Sterling | | 1 | | | |
| Raymond Stone Co | | 5 | | | |
| Raymond-Illinois Mining Co | | 5 | | | |
| Raynham MA Journal | | 1 | | | |
| Read-Miller Co | | 5 | | | |
| Reading Brewing Co | | 9 | | | |
| Reading City Passenger Railway | | 4 | | | |
| Reading Cold Storage and Ice Co | | 12 | | | |
| Reading Cooperative Bank | | 1 | | | |
| Reading Hardware Co | | 9 | | | |
| Reading Iron Works | | 3 | | | |
| Reading PA Times | | 3 | | | |
| Reading Railroad | | 6 | | 🚂 | |
| Reading Rubber Manufacturing Co | | 5 | | | |
| Readmore News Co | | | | | |
| Real Estate Board of New York | | 10 | | | |
| Real Estate Record and Builders Guide | | 2 | | | |
| Real Estate Savings and Trust Co | | 10 | | | |
| Real Estate Savings Bank of Pittsburgh | | 2 | | | |
| Real Estate Title Insurance and Trust Co | | | | | |
| Realizing Mines Co | | 6 | | | |
| Realty Co | | 19 | | | |
| Realty Corporation of Pittsburgh | | 4 | | | |
| Reardon Copper Co | | 4 | | | |
| Rech-Marbaker Co | | 2 | | | |
| Reco Divide Mining Co | | 6 | | | |
| Reco Mining and Milling Co | | 2 | | | |
| Record and Critc | | 2 | | | |
| Record and Union | | 2 | | | |
| Record Lode Mining Co | | 4 | | | |
| Record Mining Co | | 2 | | | |
| Recruit | | 1 | | | |
| Rector System Gas Heating Co | | 4 | | | |
| Red Bank Gas Light Co | | 4 | | | |
| Red Bank NJ Register | | 1 | | | |
| Red Bell Mining Co | | 3 | | | |
| Red Bluff Electric Light and Gas Co | | 2 | | | |
| Red Boy Mining and Development Co | | 3 | | | |
| Red Canyon Copper Co | | 7 | | | |
| Red Cliff Lumber Co | | 6 | | | |
| Red Cloud National Bank | | 4 | | | |
| Red Cross Hygienic Co | | 2 | | | |
| Red Cross Medical Service Co | | 2 | | | |
| Red Gap Gold Mines Co | | 3 | | | |
| Red Hill Florence Mining Co | | 5 | | | |
| Red Horse Mining Co | | 9 | | | |
| Red Jacket Hose No 1 | | 4 | | | |
| Red Lake Transportation Co | | 4 | | | |
| Red Line Transit Co | | 9 | | | |
| Red Metal Copper Co | | 5 | | | |
| Red Metals Co | | 3 | | | |
| Red Monarch Consolidated Mining Co | | 8 | | | |
| Red Mountain Consolidated Copper Mines Co | | 9 | | | |
| Red Mountain Development Co | | 3 | | | |
| Red Mountain Railroad, Mining and Smelting Co | | 11 | | | |
| Red Oak Gas Light Co | | 8 | | | |
| Red Oak Street Railway | | 4 | | | |
| Red Peaks Copper Co | | 7 | | | |
| Red River National Bank | | 2 | | | |
| Red Run Coal Co | | 2 | | | |
| Red Skin Mining Co | | 5 | | | |
| Red Springs and Bowmore Railroad | | 4 | | | |
| Red Star Line | | 1 | 1 | | |
| Red Stone Gold Mining Co | | 3 | | | |
| Red Streak Copper Mining Co | | 5 | | | |
| Red Warrior Mining Co | | 9 | | | |
| Red Wing Gas and Electric Co | | 4 | | | |
| Red Wing Gas Light and Power Co | | 8 | | | |
| Redding Daily Courier Free Press | | 1 | | | |
| Redemption Copper Mining and Milling Co | | 5 | | | |
| Reder Foundry Co | | 2 | | | |
| Redlands Home Telephone and Telegraph Co | | 4 | | | |
| Redwood City CA Times-Gazette | | 2 | | | |
| Redwood Copper Queen Mining Co | | 2 | | | |
| Reece Button Hole Machine Co | | 9 | | | |
| Reece Folding Machine Co | | 6 | | | |
| Reed Island Iron Co | | 5 | | | |
| Reeds Lake Electric Railway | | 5 | | | |
| Reeds Lake Street Railway | | 5 | | | |
| Reeds Lake, Grand Rapids and Soldiers Home Railroad | | 5 | | | |
| Reeds Peak Mining Co | | 7 | | | |
| Reedy River Power Co | | 4 | | | |
| Reeves and Co | | 8 | | | |
| Reeves, Parvin and Co | | 3 | | | |
| Refiners Gas Co | | 2 | | | |
| Refining and Producing Oil Co | | 5 | | | |
| Reformed Presbyterian | | 2 | | | |
| Reformed Quarterly Review | | 3 | | | |
| Refractionist | | 1 | | | |
| Regal Mines Co | | 9 | 1 | | |
| Regal Paint and Oil Co | | 2 | | | |
| Regal Shoe Co | | 7 | | | |
| Regal Theatre | | 6 | | | |
| Regan Safety Devices Co | | 3 | | | |
| Regenerated Cold Air Co | | 3 | | | |
| Regent Manufacturing Co | | 2 | | | |
| Regina Co | | 7 | | | |
| Register and Glenville Railroad | | 2 | | | |
| Register and Holbrook News | | 1 | | | |
| Register Gazette and Morning Star | | 1 | | | |
| Register-Gazette | | 2 | | | |
| Registered Pharmacist | | 2 | | | |
| Registrar and Transfer Co | | 8 | | | |
| Reib Printing Co | | 6 | | | |
| Reichner Brothers | | | | | |
| Reid Coal Co | | 6 | | | |
| Reid Newfoundland Co | | 11 | | | |
| Reid Tailoring Co | | 3 | | | |
| Reid, Henderson and Co | | 3 | | | |
| Reid, Murdoch and Co | | 7 | | | |
| Reindeer Copper Mining and Milling Co | | 5 | | | |
| Reindeer Queen Mining Co | | 5 | | | |
| Reineke Wagner Pump and Supply Co | | 3 | | | |
| Reiniger Freeman Mining Co | | 6 | | | |
| Reisterstown Savings Bank | | 1 | | | |
| Reliable Grocery Co | | 3 | | | |
| Reliable Savings and Loan Association | | 9 | | | |
| Reliance Cooperative Bank | | 1 | | | |
| Reliance Distilling and Bottling Co | | 3 | | | |
| Reliance Engraving Co | | 3 | | | |
| Reliance Life Insurance Co | | 25 | | | |
| Reliance Manufacturing Co | | 2 | | | |
| Reliance Mining and Milling Co | | 5 | | | |
| Reliance Steel Casting Co | | 2 | | | |
| Relief Mining Co | | 6 | | | |
| Religious Herald | | 6 | | | |
| Religious Recorder | | 2 | | | |
| Religious Telescope | | 8 | | | |
| Remien and Kuhnert Co | | 2 | | | |
| Remington Gas Light Co | | 2 | | | |
| Remington IN Press | | 2 | | | |
| Remington Printing Co | | 2 | | | |
| Remington Typewriter Co | | 35 | | | |
| Rempe Co | | 2 | | | |
| Remy-Mickley Co | | 3 | | | |
| Renfrew Manufacturing Co | | 12 | | | |
| Reno and Johns | | 4 | | | |
| Reno Divide Mining Co | | 7 | | | |
| Reno Power, Light and Water Co | | 3 | | | |
| Reno Silver Hills Mining Co | | 6 | | | |
| Reno Water, Land and Light Co | | 3 | | | |
| Reno-Yerington Copper Co | | 6 | | | |
| Renshaw, Jones and Sutton Co | | 9 | | | |
| Reorganized Cracker Jack Mining Co | | 5 | | | |
| Reorganized Diamondfield Triangle Mining Co | | 2 | | | |
| Reorganized Pioneer Mines Co | | 4 | | | |
| Reporter and Farmer | | 2 | | | |
| Republic Bank Note Co | | 6 | | | |
| Republic Branch Railroad | | 5 | | | |
| Republic Coal Co | | 2 | | | |
| Republic Construction Co | | 3 | | | |
| Republic Cotton Mills | | 7 | | | |
| Republic Mines Co | | 3 | | | |
| Republic Mining and Manufacturing Co of Georgia | | 2 | | | |
| Republic Mining Co | | 4 | | | |
| Republic of the United States | | 1 | | | |
| Republic Railway and Light Co | | 17 | | | |
| Republic Rubber Co | | 7 | | | |
| Republic State Bank of Minneapolis | | 1 | | | |
| Republic Trust Co | | 3 | | | |
| Republican Banner | | 3 | | | |
| Republican Champion | | 1 | | | |
| Republican Observer | | 2 | | | |
| Requa-Savage Mines Co | | 3 | | | |
| Rescue-Eula Mining Co | | 8 | | | |
| Reservation Hill Mining and Milling Co | | 6 | | | |
| Retner and Kay Fork Railroad | | 4 | | | |
| Revenue Oil Co | | 5 | | | |
| Revere Cooperative Bank | | 2 | | | |
| Revere MA Journal | | 1 | | | |
| Revere Water Co | | 3 | | | |
| Reversible Collar Co | | 7 | | | |
| Revert Divide Mining Co | | 3 | | | |
| Review and Record Co | | 3 | | | |
| Review Atlas | | 1 | | | |
| Review of Reviews Co | | 5 | | | |
| Rex Carbon Coal Co | | 6 | | | |
| Rex Gold Mines and Investment Co | | 3 | | | |
| Rex Heck News Co | | | | | |
| Rex Manufacturing Co | | 5 | | | |
| Rex Mining Co | | 2 | | | |
| Reyburn, Hunter and Co | | 2 | | | |
| Reymer and Brothers | | 5 | | | |
| Reynolds IL Press | | 3 | | | |
| Reynolds Johnson Coal Co | | 3 | | | |
| Reynolds-Alaska Developing Co | | 12 | | | |
| Reynoldsville Water Co | | 8 | | | |
| Rhinebeck and Connecticut Railroad | | 6 | | | |
| Rhinebeck Gas Co | | 4 | | | |
| Rhode Island Agricultural Experiment Station | | 5 | | | |
| Rhode Island and Massachusetts Railroad of MA | | 3 | 1 | | |
| Rhode Island and Massachusetts Railroad of RI | | 2 | 1 | | |
| Rhode Island Card Board Co | | 2 | | | |
| Rhode Island Copper Co | | 10 | | | |
| Rhode Island Covering Co | | 2 | | | |
| Rhode Island Dental Society | | 20 | | | |
| Rhode Island Dyeing and Finishing Co | | 3 | | | |
| Rhode Island Fish Co | | 4 | | | |
| Rhode Island Horse Shoe Co | | 3 | | | |
| Rhode Island Investment Co | | 6 | | | |
| Rhode Island Locomotive Works | | 2 | 1 | | |
| Rhode Island Mutual Fire Insurance Co | | 5 | | | |
| Rhode Island News Co | | | | | |
| Rhode Island Pendulum | | 1 | | | |
| Rhode Island Roofing Co | | 3 | | | |
| Rhode Island Suburban Railway | | 6 | | | |
| Rhode Island Telephone and Electric Co | | 3 | | | |
| Rhodes and Keese Electric Co | | 3 | | | |
| Rhodes and Ripley Clothing Co | | 4 | | | |
| Rhodes Brothers Co | | 3 | | | |
| Rhodes Manufacturing Co | | 3 | | | |
| Rhodes Watch Tool Co | | 2 | | | |
| Rhodesia Broken Hill Development Co | | 3 | | | |
| Rialto Co | | 10 | | | |
| Rice and Hutchins | | 4 | | | |
| Rice Ranch Oil Co | | 8 | | | |
| Rice State Bank | | 1 | | | |
| Rice Stone Co | | 4 | | | |
| Rice-Stix Dry Goods Co | | 15 | | | |
| Rich and Allen Co | | 2 | | | |
| Rich Hill Coke Co | | 2 | | | |
| Rich Hill Light, Heat and Power Co | | 3 | | | |
| Rich-Holt Co | | | | | |
| Richard Borden Manufacturing Co | | 7 | | | |
| Richard Briggs Co | | 4 | | | |
| Richard Heckscher and Sons Co | | 4 | | | |
| Richard Pick Manufacturing Co | | 3 | | | |
| Richards and Co | | 5 | | | |
| Richards Chair-Panel Co | | 2 | | | |
| Richards Coal Mining Co | | 3 | | | |
| Richards Publishing Co | | 3 | | | |
| Richardson and Clark | | 2 | | | |
| Richardson and Co | | 8 | | | |
| Richardson and Foster Co | | 2 | | | |
| Richardson Ball Bearing Skate Co | | 2 | | | |
| Richardson Shoe Machinery Co | | 5 | | | |
| Richardson Silk Co | | 3 | | | |
| Richelieu Wine Co | | 2 | | | |
| Richert-Osborn Coffee Co | | 4 | | | |
| Richfield Copper Co | | 21 | | | |
| Richfield Oil Co | | 9 | | | |
| Richford VT Journal | | 1 | | | |
| Richland Furnace Co | | 2 | | | |
| Richland Mines Co | | 5 | | | |
| Richland State Bank of Rayville | | 1 | | | |
| Richmond and Petersburg and Petersburg Railroad | | 3 | | | |
| Richmond and Smith Co | | 3 | | | |
| Richmond City Railway | | 3 | | | |
| Richmond City Water Works | | 7 | | | |
| Richmond County Gas Light Co | | 3 | | | |
| Richmond County Savings Bank | | 16 | | | |
| Richmond Gas Co | | 4 | | | |
| Richmond Gas Light Co | | 3 | | | |
| Richmond Hill Mining, Milling and Leasing Co | | 5 | | | |
| Richmond Home Telephone Co | | 15 | | | |
| Richmond Insurance Co of New York | | 17 | | | |
| Richmond Iron Co | | 2 | | | |
| Richmond Land Co | | 3 | | | |
| Richmond Manufacturing Co | | 3 | | | |
| Richmond ME Bee | | 1 | | | |
| Richmond Mining, Milling and Reduction Co | | 5 | | | |
| Richmond National Bank | | 14 | | | |
| Richmond Natural Gas Co | | 5 | | | |
| Richmond News Co | | | | | |
| Richmond Park Plat Co | | 3 | | | |
| Richmond Spinning Co | | 9 | | | |
| Richmond Times-Dispatch | | 5 | | | |
| Richmond Union Passenger Railway | | 3 | | | |
| Richmond VA North Side News | | 1 | | | |
| Richmond VA Planet | | 1 | | | |
| Richmond VA Reformer | | 1 | | | |
| Richmond VA Times | | 1 | | | |
| Richmond Virginians | | 19 | | | |
| Richmond Water and Light Co | | 3 | | | |
| Richmond, Nicholasville Irvine and Beattyville Railroad | | 5 | | | |
| Richmond-Arnold Publishing Co | | | | | |
| Richmond-Eureka Mining Co | | 12 | | | |
| Richmord Planet | | 1 | | | |
| Richter Mfg Co | | 2 | | | |
| Richter Periodical Co | | | | | |
| Rick Furniture Co | | 6 | | | |
| Rico Argentine Mining Co | | 7 | | | |
| Rico Exploration Co | | 3 | | | |
| Ridge and Valley Mining Co | | 6 | | | |
| Ridge Ave Bank of Philadelphia | | 4 | | | |
| Ridge Avenue Bank of Philadelphia | | 19 | | | |
| Ridge Avenue Railway | | 3 | | | |
| Ridgefield CT Press | | 1 | | | |
| Ridgewood Gas Co | | 3 | | | |
| Ridgewood National Bank | | 14 | | | |
| Ridgewood NJ News | | 1 | | | |
| Ridgewood NJ Record | | 1 | | | |
| Ridgway IL News | | 3 | | | |
| Ries Mining Co | | 4 | | | |
| Rifle River Electric Lighting Co | | 1 | | | |
| Riggs and Sherman | | 3 | | | |
| Right Good Mining Co | | 4 | | | |
| Right of Way Mines | | 3 | | | |
| Riker and Hegeman Co | | 17 | | | |
| Riley Darnell Co | | 2 | | | |
| Riley-Moore Engraging Co | | 3 | | | |
| Rilla Mining Co | | 6 | | | |
| Rincon Mines Co | | 7 | | | |
| Rindge Land and Navigation Co | | 4 | | | |
| Ringgold State Bank | | 1 | | | |
| Rio Bonito Co | | 5 | | | |
| Rio Bravo Oil Co | | 6 | | | |
| Rio Grande and Eagle Pass Railway | | 8 | | | |
| Rio Grande and Pagosa Springs Railroad | | 6 | | | |
| Rio Grande and Pecos Railway | | 6 | | | |
| Rio Grande Railroad | | 9 | | | |
| Rio Grande Southern Railway | | 18 | 1 | | |
| Rio Grande, Sierra Madre and Pacific Railway | | 10 | | | |
| Rio Hondo Copper Co | | 14 | | | |
| Rio Plata Mining Co | | 16 | | | |
| Rio Tinto Co | | 4 | | | |
| Rio Tinto Copper Co | | 6 | | | |
| Ripley and Co | | 5 | | | |
| Ripley Gas Light and Coke Co | | 8 | | | |
| Ripley Howland Manufacturing Co | | 3 | | | |
| Ripley MS Standard | | 3 | | | |
| Ripon Light and Water Co | | 5 | | | |
| Ripon Lighting Co | | 3 | | | |
| Ripon National Bank | | 1 | | | |
| Ripple Consolidated Mining Co | | 3 | | | |
| Risdon Iron and Locomotive Works | | 4 | | | |
| Rising Sun Deposit Bank | | 1 | | | |
| Ristine Co | | 5 | | | |
| Ritchie Standard | | 2 | | | |
| Riter-Conley Manufacturing Co | | 14 | | | |
| Rittenhouse and Embree Co | | 2 | | | |
| Rival Mining Co | | 9 | | | |
| River and Rail Electric Co | | 9 | | | |
| River Forest IL Leaves | | 2 | | | |
| River Raisin and Grand River Railroad | | 9 | | | |
| River Raisin and Lake Erie Railroad | | 7 | | | |
| Riverbank Court Hotel Co | | 5 | | | |
| Riverdale Cotton Mills | | 4 | | | |
| Riverhead NY Courier | | 2 | | | |
| Rivers Brothers Co | | 29 | | | |
| Riverside and Arlington Railway | | 5 | | | |
| Riverside Bank of New York | | 13 | | | |
| Riverside Brick Co | | 3 | | | |
| Riverside Horse and Mule Co | | 4 | | | |
| Riverside IL News | | 1 | | | |
| Riverside Iron and Steel Works | | 4 | | | |
| Riverside Iron Works | | 3 | | | |
| Riverside Oil Co | | 5 | | | |
| Riverside Paper Co | | | | | |
| Riverside Portland Cement Co | | 20 | | | |
| Riverside Publishing Co | | 3 | | | |
| Riverside Water Co | | 13 | | | |
| Riverside Western Oil Co | | 4 | | | |
| Riverton Coal Co | | 2 | | | |
| Riverton IA Independent | | 2 | | | |
| Riverton NE Review | | 2 | | | |
| Riverton NJ New Era | | 2 | | | |
| Roachdale IN News | | 2 | | | |
| Roane Iron Co | | 3 | | | |
| Roanoke Baptist Union | | 2 | | | |
| Roanoke Beacon | | 1 | | | |
| Roanoke Gas and Water Co | | 7 | | | |
| Roanoke IL Post | | 2 | | | |
| Roanoke Machine Works | | 2 | | | |
| Roanoke Mining and Milling Co | | 3 | | | |
| Roanoke Street Railway | | 3 | | | |
| Roanoke Traction and Light Co | | 6 | | | |
| Roanoke VA Evening World | | 1 | | | |
| Roanoke Valley Orchards | | 2 | | | |
| Roanoke Valley Railroad | | 8 | | | |
| Roaring Creek and Charleston Railroad | | 5 | | | |
| Roaring Creek Water Co | | 3 | | | |
| Robb Engineering Co | | 9 | | | |
| Robbins and Son | | | | | |
| Robbins Electric Co | | 3 | | | |
| Robbins Publishing Co | | 1 | | | |
| Robbins Spring Water Co | | 4 | | | |
| Robbins-Tillquist Co | | | | | |
| Robert Aitchison Perforated Metal Co | | 2 | | | |
| Robert Ashdon Printing Co | | 3 | | | |
| Robert Burns Mining Co | | 3 | | | |
| Robert Clarke and Co | | | | | |
| Robert Emmet Copper Co | | 2 | | | |
| Robert Gair Co | | 12 | | | |
| Robert Glendenning and Co | | 2 | | | |
| Robert Graves Co | | 6 | | | |
| Robert H. Lord | | | | | |
| Robert Kashower | | | | | |
| Robert L. Ware Co | | 15 | | | |
| Robert Marsh and Co | | 35 | | | |
| Robert Morris Trust Co | | 3 | | | |
| Robert O. Law Co | | 3 | | | |
| Robert Rau Manufacturing Co | | 3 | | | |
| Robert Rossman Co | | 3 | | | |
| Robert Sharp and Son Co | | 3 | | | |
| Robert Sherer and Co | | 4 | | | |
| Robert Smith Ale Brewing Co | | 7 | | | |
| Robert Stevenson and Co | | 5 | | | |
| Roberta Mining and Milling Co | | 6 | | | |
| Roberts IL Herald | | 2 | | | |
| Roberts Iron Works Co | | 3 | | | |
| Roberts, Johnson and Rand Shoe Co | | 11 | | | |
| Roberts-Boice Paper Co | | | | | |
| Roberts-Brevoort Electric Co | | 5 | | | |
| Robertson County KY Tribune Democrat | | 2 | | | |
| Robeson Mills | | 7 | | | |
| Robesonian | | 1 | | | |
| Robins Dry Dock and Repair Co | | 4 | | | |
| Robinson Deep | | 2 | | | |
| Robinson Furnace Co | | 3 | | | |
| Robinson IL Argus | | 3 | | | |
| Robinson IL Constitution | | 4 | | | |
| Robinson IL News | | 2 | | | |
| Robinson Iron Co | | 2 | | | |
| Robinson Manufacturing Co | | 6 | | | |
| Robinson Oil Co | | 2 | | | |
| Robson and Adee Publishers | | | | | |
| Rochelle IL Leader | | 2 | | | |
| Rochelle IL News | | 4 | | | |
| Rocher De Boule Copper Co | | 3 | | | |
| Rochester Academy of Science | | 8 | | | |
| Rochester and Genesee Valley Railroad | | 17 | | | |
| Rochester and Lake Ontario Railway | | 3 | 1 | | |
| Rochester and Ontario Belt Railroad | | 3 | | | |
| Rochester and Romeo Railroad | | 5 | | | |
| Rochester and St Clair Railroad | | 5 | | | |
| Rochester Bridge and Iron Works | | 2 | 1 | | |
| Rochester Buck and Charley Mines Co of Nevada | | 7 | | | |
| Rochester Building Co | | 3 | | | |
| Rochester City and Brighton Railroad | | 5 | | | |
| Rochester Cobalt Mines | | 9 | | | |
| Rochester Cut Glass Co | | 4 | | | |
| Rochester Gas Light Co | | 5 | | | |
| Rochester Home Trail Mines Co of Nevada | | 3 | | | |
| Rochester Improvement Co | | 2 | | | |
| Rochester Jeffersons | | 92 | | | |
| Rochester Light, Heat and Power Co | | 1 | | | |
| Rochester National Bank | | 1 | | | |
| Rochester News Co | | | | | |
| Rochester NH Leader | | 1 | | | |
| Rochester NH Record | | 1 | | | |
| Rochester NY Democrat | | 2 | | | |
| Rochester NY Evening Times | | 5 | | | |
| Rochester NY Herald | | 16 | | | |
| Rochester NY Morning Herald | | 3 | | | |
| Rochester NY Post Express | | 9 | | | |
| Rochester NY Union | | 1 | | | |
| Rochester Octopus Mines Co of Nevada | | 3 | | | |
| Rochester Optical and Camera Co | | 8 | | | |
| Rochester Pathological Society | | 9 | | | |
| Rochester Raven Mines Co of Nevada | | 6 | | | |
| Rochester Treasure Mining Co | | 5 | | | |
| Rochester Tribune | | 2 | | | |
| Rochester Trust Co | | 13 | | | |
| Rochester Water Works | | 7 | | | |
| Rochester, Almont and Northern Railroad | | 9 | | | |
| Rochester, Hornellsville and Lackawanna Railroad | | 3 | | | |
| Rochester, New York and Pennsylvania Railroad | | 2 | | | |
| Rock County Bank of Luverne | | 1 | | | |
| Rock County WI Banner | | 3 | | | |
| Rock Hill Herald | | 1 | | | |
| Rock Hill SC Herald | | 1 | | | |
| Rock Hill SC Messenger | | 1 | | | |
| Rock Island and Milan Street Railway | | 3 | | | |
| Rock Island and Peoria Railroad | | 22 | | | |
| Rock Island Gas Co | | 2 | | | |
| Rock Island IL Argus | | 4 | | | |
| Rock Island Independents | | 93 | | | |
| Rock Island Post Card Co | | | | | |
| Rock Island Tri-City Labor Review | | 1 | | | |
| Rock Islander | | 3 | | | |
| Rock Plaster Manufacturing Co | | 8 | | | |
| Rock Port, Langdon and Northern Railway | | 6 | | | |
| Rock Rose Mining and Milling Co | | 5 | | | |
| Rock Tunneling Machine Co | | 7 | | | |
| Rockaway NJ Church and Home | | 1 | | | |
| Rockaway NJ Record | | 1 | | | |
| Rockaway Valley Railway | | 5 | | | |
| Rockbridge Alum and Goshen Railroad | | 1 | | | |
| Rockbridge County News | | 1 | | | |
| Rockefeller Institute | | 22 | | | |
| Rockefeller Institute for Medical Research | | 10 | | | |
| Rocker Spring Co | | 2 | | | |
| Rockford and Interurban Railway | | 13 | | | |
| Rockford City Railway | | 4 | | | |
| Rockford Forest Citys | | 11 | | | |
| Rockford Home Telephone Co | | 12 | | | |
| Rockford IA Register | | 1 | | | |
| Rockford IL Daily Journal | | 2 | | | |
| Rockford IL Labor News | | 1 | | | |
| Rockford IL Morning Star | | 10 | | | |
| Rockford Life Insurance Co | | 2 | | | |
| Rockford MI Register | | 2 | | | |
| Rockford National Bank | | 1 | | | |
| Rockford Safety Deposit Co | | 2 | | | |
| Rockford, Rock Island and St Louis Railway | | 22 | | | |
| Rockhill Iron and Coal Co | | 16 | | | |
| Rockingham Brick Co | | 4 | | | |
| Rockingham NC Index | | 1 | | | |
| Rockland and Thomaston Gas Light Co | | 4 | | | |
| Rockland Electric Co | | 3 | | | |
| Rockland Light and Power Co | | 3 | | | |
| Rockland MA Independent | | 1 | | | |
| Rockland ME Opinion | | 1 | | | |
| Rockland-Rockport Lime Co | | 12 | | | |
| Rockport Granite Co of Massachusetts | | 6 | | | |
| Rockport MA Review | | 1 | | | |
| Rockport Railroad | | 4 | | | |
| Rockport TX New Era | | 3 | | | |
| Rockton IL Herald | | 3 | | | |
| Rockville CT Journal | | 1 | | | |
| Rockville Gas and Electric Co | | 3 | | | |
| Rockville Railroad | | 8 | 1 | | |
| Rockville State Bank of Boelus | | 1 | | | |
| Rockville Water and Aqueduct Co | | 18 | | | |
| Rockville, Broad Brook and East Windsor Street Railway | | 1 | | | |
| Rockville-Willimantic Lighting Co | | 8 | | | |
| Rockwell and Churchill | | | | | |
| Rockwell and Churchill Press | | 3 | | | |
| Rockwell and Rupel Co | | 3 | | | |
| Rockwood and Tennessee River Railroad | | 10 | | | |
| Rockwood Brothers Co | | 4 | | | |
| Rocky Mount NC Argonaut | | 1 | | | |
| Rocky Mount NC Phoenix | | 1 | | | |
| Rocky Mountain Christian Advocate | | 2 | | | |
| Rocky Mountain Mines Co | | 3 | | | |
| Rocky Mountain News | | 3 | | | |
| Rocky Mountain World | | 2 | | | |
| Rocky Point Oyster Co | | 2 | | | |
| Rockymount VA Times-Democrat | | 1 | | | |
| Rodeo Land and Water Co | | 6 | | | |
| Rodgers Sand Co | | 3 | | | |
| Rodman Manufacturing Co | | 5 | | | |
| Roebling Construction Co | | 4 | | | |
| Roeding and Wood Nursery Co | | 4 | | | |
| Roessler and Hasslacher Chemical Co | | 8 | | | |
| Rogers and Hall Co | | 3 | | | |
| Rogers and McCoy Brothers | | 4 | | | |
| Rogers and Smith Co | | 3 | | | |
| Rogers Park Water Co | | 3 | | | |
| Rogers, Bacon and Co | | 5 | | | |
| Rogers-Arizona Mining Co | | 6 | | | |
| Rogersville and Jefferson Railroad | | 3 | | | |
| Rogersville TN Journal | | 1 | | | |
| Rogersville TN Review | | 2 | | | |
| Rogue River Electric Co | | 3 | | | |
| Rogue River Expedition | | 10 | | | |
| Rogue River Valley Railway | | 7 | | | |
| Rohe, Heitmann Co | | 5 | | | |
| Rohrerstown, Landisville and Mount Joy Street Railway | | 3 | | | |
| Romance Divide Mining Co | | 5 | | | |
| Rome and Clinton Railroad | | 2 | | | |
| Rome City Street Railway | | 4 | | | |
| Rome Gas Light Co | | 6 | | | |
| Rome Gas, Electric Light and Power Co | | 9 | 1 | | |
| Rome Iron Works Co | | 2 | | | |
| Rome Locomotive and Machine Works | | 7 | | | |
| Rome Railroad | | 24 | | | |
| Rome Street Railroad | | 4 | | | |
| Rome Wire Co | | 10 | | | |
| Romeo and Almont Railroad | | 8 | | | |
| Romeo and Mt Clemens Railroad | | 16 | | | |
| Romeo and Western Railroad | | 7 | | | |
| Rondout and Kingston Gas Light Co | | 2 | | | |
| Rood Magic Scale Co | | 3 | | | |
| Roodhouse IL Record | | 1 | | | |
| Rooiberg Minerals Development Co | | 4 | | | |
| Roosevelt Divide Mining Co | | 4 | | | |
| Roosevelt Lake Copper Co | | 6 | | | |
| Root Electric Gas Lighting Co | | 3 | | | |
| Roper Group Mining Co | | 11 | | | |
| Rosalind Divide Mining Co | | 5 | | | |
| Rosario Mining Co | | 7 | | | |
| Roscoe Exchange Bank | | 1 | | | |
| Roscoe SD Herald | | 2 | | | |
| Roscoe-Rockland NY Review | | 2 | | | |
| Rose and Carter Co | | 2 | | | |
| Rose Co | | | | | |
| Rose Consolidated Mining Co | | 7 | | | |
| Rose Manufacturing Co | | 7 | | | |
| Rose Nicol Gold Mining Co | | 7 | | | |
| Rose Nursery Co | | 3 | | | |
| Rose-Rogers Co | | 5 | | | |
| Rosebery Surprise Mining Co | | 4 | | | |
| Roseland Safety Deposit Co | | 4 | | | |
| Roselle and South Plainfield Railway | | 3 | | | |
| Roselle IL Register | | 1 | | | |
| Rosemont Dyeing Co | | 4 | | | |
| Rosenbaum Brothers and Co | | 8 | | | |
| Rosenbaum Co | | 5 | | | |
| Rosetta Divide Mining Co | | 5 | | | |
| Roseville IL Times-Citizen | | 1 | | | |
| Rosiclare IL News | | 2 | | | |
| Rosin and Co | | | | | |
| Roslindale Cooperative Bank | | 1 | | | |
| Ross and Penrose Co | | 2 | | | |
| Ross County National Bank of Chillicothe | | 1 | | | |
| Ross Mining and Milling Co | | 11 | | | |
| Ross, Flowers and Co | | 2 | | | |
| Rossia Insurance Co | | 5 | | | |
| Rossland Kootenay Mining Co | | 4 | | | |
| Rossville IL Press | | 5 | | | |
| Roswell Gas Co | | 7 | | | |
| Roswell NM Record | | 2 | | | |
| Rotary Air Brake Co | | 8 | | | |
| Rotary Manufacturing Co | | 5 | | | |
| Rotary Ring Spinning Co | | 8 | | | |
| Roth Brothers and Co | | 3 | | | |
| Roths State Bank of Pittsburgh | | 1 | | | |
| Rothsay MN Record | | 2 | | | |
| Rothschild Brothers | | | | | |
| Rotograph Co | | | | | |
| Roulette Gas Co | | 5 | | | |
| Round Mountain Mining Co | | 8 | | | |
| Roundabout Prints | | | | | |
| Roundy Regalia Co | | 3 | | | |
| Routt County Anthracite Coal Co | | 7 | | | |
| Rowell-Potter Safety Stop Co | | 4 | | | |
| Rowins Printing Co | | 2 | | | |
| Rowland and Pfaff Co | | 3 | | | |
| Rowley Copper Mines Co | | 5 | | | |
| Roxbury Carpet Co | | 3 | | | |
| Roxbury Cooperative Bank | | 14 | | | |
| Roxbury Gas Light Co | | 4 | | | |
| Roxbury Gazette | | 1 | | | |
| Roxbury Storage Warehouse | | 3 | | | |
| Roy C. Seeley Co | | 5 | | | |
| Royal Arcanum Courier | | 2 | | | |
| Royal Arcanum Guide | | 2 | | | |
| Royal Bank of Canada | | 19 | | | |
| Royal Brick Co | | 5 | | | |
| Royal Chemical Co | | 3 | | | |
| Royal Chemical Works | | 4 | | | |
| Royal Consolidated Copper Co | | 6 | | | |
| Royal Consolidated Mines | | 3 | | | |
| Royal Craftsman | | 1 | | | |
| Royal Divide Mining Co | | 9 | | | |
| Royal Dutch Gasoline Co | | 5 | | | |
| Royal Electric Co | | 14 | | | |
| Royal Electrical Specialty Co | | 4 | | | |
| Royal Gem Mining Co | | 2 | | | |
| Royal Guarantee and Investment Co | | 3 | | | |
| Royal Gum Co | | 3 | | | |
| Royal Indemnity Co | | 15 | | | |
| Royal Insurance Co | | 7 | | | |
| Royal Laundry Co | | 6 | | | |
| Royal Mining Co | | 5 | | | |
| Royal Packing Co | | 3 | | | |
| Royal Safety Deposit Vaults | | 3 | | | |
| Royal Tea Co | | 3 | | | |
| Royal Tiger Mining Co | | 2 | | | |
| Royal Trust Co | | 8 | | | |
| Royal Typewriter Co | | 19 | | | |
| Royce-Franklin Co | | 4 | | | |
| Roydhouse, Arey and Co | | 2 | | | |
| Royersford PA Tribune | | 2 | | | |
| Royston State Bank | | 1 | | | |
| Rubber Paint Co | | 5 | | | |
| Rubber Tire Co of America | | 5 | | | |
| Rubel-Lilienfeld Co | | 5 | | | |
| Ruben Publishing Co | | | | | |
| Rubio Savings Bank | | 1 | | | |
| Ruby Copper Co | | 9 | | | |
| Ruby Hill Development Co | | 2 | | | |
| Ruby Mining Co | | 5 | | | |
| Ruby Silver Co | | 4 | | | |
| Ruby Silver Mining Co | | 3 | | | |
| Ruddock, Bonnet Carre and Northern Railroad | | 4 | | | |
| Ruddy Brothers | | 2 | | | |
| Rudolph Brothers | | | | | |
| Rudolph Wurlitzer Co | | 8 | | | |
| Rudy Brothers Co | | 3 | | | |
| Ruebush-Elkins Co | | | | | |
| Rueckert Manufacturing Co | | 3 | | | |
| Ruehl Brothers Brewing Co | | 3 | | | |
| Rueter and Co | | 4 | | | |
| Rufus Merrill and Son | | | | | |
| Ruhstrat-Cowley Co | | 4 | | | |
| Rumford Chemical Co | | 1 | | | |
| Rumford Chemical Works | | 6 | | | |
| Rumford Falls and Rangeley Lakes Railroad | | 4 | | | |
| Rural Canadian | | 3 | | | |
| Rural New Yorker | | 4 | | | |
| Rural Retreat VA Times | | 1 | | | |
| Rural Valley National Bank | | 2 | | | |
| Rural Valley Railroad | | 2 | | | |
| Rushville Gas Light Co | | 3 | | | |
| Rushville IL Times | | 5 | | | |
| Russell Electric Lamp Co | | 3 | | | |
| Russell KS Record | | 2 | | | |
| Russell Manufacturing Co | | 2 | | | |
| Russell Motor Sales Co | | 4 | | | |
| Russell Realty Co | | 3 | | | |
| Russell, Pratt and Co | | 3 | | | |
| Russell-Greene-Foell Co | | 5 | | | |
| Russell-Lane Piano Co | | 2 | | | |
| Russian Mining Co | | 8 | | | |
| Rustler Mining and Milling Co | | 6 | | | |
| Ruth Consolidated Mining and Milling Co | | 7 | | | |
| Ruth Murray Miller | | | | | |
| Ruth St Denis School of Dancing | | 3 | | | |
| Rutherford NJ American | | 1 | | | |
| Rutherford NJ News | | 1 | | | |
| Rutherford Paper Co | | 3 | | | |
| Ruthven Machinery Co | | 4 | | | |
| Rutland and Washington Railroad | | 12 | | | |
| Rutland IL Record | | 3 | | | |
| Rutland Railway Light and Power Co | | 8 | | | |
| Rutland Savings Bank of Rutland | | 1 | | | |
| Rutland Street Railway | | 4 | | | |
| Rutland VT Herald | | 5 | | | |
| Rutland VT Sstar | | 1 | | | |
| Rutland VT Times | | 1 | | | |
| Ruud Manufacturing Co | | 3 | | | |
| Ryan Davis Divide Mining Co | | 5 | | | |
| Rye and Port Chester Gas Light Co | | 2 | | | |
| Rye Patch Mines Co | | 7 | | | |
| Ryland-Robinson Co | | 3 | | | |
| Ryrie Brothers | | 5 | | | |
Our Family Tree
