| Aberdeen and Rock Fish Railroad | 2 |
| Adirondack Railway | 2 |
| Alabama Great Southern Railroad | 4 |
| Alabama Midland Railway | 1 |
| Albany and Susquehanna Railroad | 2 |
| Alexandria, Loudoun and Hampshire Railroad | 2 |
| Androscoggin and Kennebec Railroad | 1 |
| Ann Arbor Railroad | 1 |
| Atchison and Nebraska Railroad | 2 |
| Atchison Topeka and Santa Fe Railway | 9 |
| Atlanta and Charlotte Air Line Railroad | 2 |
| Atlanta and West Point Railroad | 1 |
| Atlantic and Great Western Railroad | 5 |
| Atlantic and North Carolina Railroad | 3 |
| Atlantic and Pacific Railroad | 6 |
| Atlantic Coast Line Railroad | 4 |
| Atlantic, Valdosta and Western Railway | 1 |
| Auburn and Allentown Railroad | 1 |
| Baltimore and Ohio Railroad | 13 |
| Baltimore and Port Deposit Railroad Company | 1 |
| Baltimore and Susquehanna Railroad | 1 |
| Bangor and Aroostook Railroad | 1 |
| Belleville and Illinoistown Railroad | 2 |
| Belpre and Cincinnati Railroad | 1 |
| Bennington and Rutland Railway | 1 |
| Bismarck, Washburn and Great Falls Railway | 1 |
| Blue Ridge Railway | 1 |
| Boston and Albany Railroad | 3 |
| Boston and Lowell Railroad | 2 |
| Boston and Maine Railroad | 1 |
| Boston and Providence Railroad | 3 |
| Boston, Clinton and Fitchburg Railroad | 1 |
| Boston, Hoosac Tunnel and Western Railway | 3 |
| Bristol Railroad | 1 |
| Brotherhood of Railway Trainmen | 1 |
| Buffalo and Susquehanna Railroad | 1 |
| Buffalo, Rochester and Pittsburgh Railway | 1 |
| Burlington and Missouri River Railroad | 3 |
| Burlington County Railroad | 1 |
| Burlington, Cedar Rapids and Northern Railway | 1 |
| Bushwick Railroad Company | 1 |
| Cairo and Vincennes Railroad | 1 |
| Camden and Amboy Railroad | 4 |
| Canada Southern Railway | 2 |
| Canadian Pacific Railway | 1 |
| Cape Cod Canal | 2 |
| Cape Cod Railroad | 2 |
| Cape Fear and Northern Railway | 1 |
| Cape Fear and Yadkin Valley Railway | 3 |
| Cape Girardeau MO Railway | 2 |
| Carolina Central Railroad | 2 |
| Central Branch Union Pacific Railway | 1 |
| Central Iowa Railway | 2 |
| Central Military Tract Railroad | 1 |
| Central New England Railway | 1 |
| Central of Georgia Railway | 3 |
| Central Pacific Railroad | 6 |
| Central Railroad of New Jersey | 1 |
| Central Union Depot and Railway Company of Cincinnati | 1 |
| Central Vermont Railway | 4 |
| Charleston and Savannah Railroad | 1 |
| Charleston and Savannah Railway | 1 |
| Charlotte, Columbia and Augusta Railroad | 1 |
| Chatham Railroad | 1 |
| Chesapeake and Ohio Canal | 4 |
| Chesapeake and Ohio Railroad | 9 |
| Chestnut Hill Railroad | 1 |
| Chicago and Alton Railway | 7 |
| Chicago and Atlantic Railway | 1 |
| Chicago and Eastern Illinois Railroad | 1 |
| Chicago and Erie Railroad | 2 |
| Chicago and Grand Trunk Railway | 2 |
| Chicago and Iowa Railroad | 1 |
| Chicago and Northwestern Railway | 7 |
| Chicago and Ohio River Railroad | 1 |
| Chicago and Paducah Railroad | 1 |
| Chicago and Rock Island Railroad | 3 |
| Chicago and West Michigan Railway | 1 |
| Chicago and Western Indiana Railroad | 1 |
| Chicago, Burlington and Northern Railroad | 1 |
| Chicago, Burlington and Quincy Railroad | 11 |
| Chicago, Indianapolis and Louisville Railway | 1 |
| Chicago, Iowa and Nebraska Railroad | 1 |
| Chicago, Milwaukee and St Paul Railway | 7 |
| Chicago, Rock Island and Pacific Railway | 4 |
| Chicago, St Paul, Minneapolis and Omaha Railway | 1 |
| Choctaw, Oklahoma and Gulf Railroad | 1 |
| Cincinnati and Muskingum Valley Railroad | 2 |
| Cincinnati and Zanesville Railroad | 1 |
| Cincinnati Northern Railroad | 1 |
| Cincinnati Southern Railway | 1 |
| Cincinnati, Georgetown and Portsmouth Railroad | 1 |
| Cincinnati, Hamilton and Dayton Railway | 5 |
| Cincinnati, Indianapolis St Louis and Chicago Railway | 1 |
| Cincinnati, Lebanon and Northern Railway | 1 |
| Cincinnati, New Orleans and Texas Pacific Railway | 3 |
| Clarendon and Pittsford Railroad | 1 |
| Cleveland and Columbus Railroad | 1 |
| Cleveland and Marietta Railroad | 1 |
| Cleveland and Toledo Railroad | 2 |
| Cleveland, Akron and Columbus Railway | 1 |
| Cleveland, Cincinnati, Chicago and St Louis Railway | 3 |
| Cleveland, Lorain and Wheeling Railroad | 2 |
| Coal and Coke Railway | 1 |
| Colorado and Southern Railway | 3 |
| Colorado Central Railroad | 1 |
| Colorado Midland Railway | 2 |
| Columbus and Toledo Railroad | 1 |
| Columbus, Hocking Valley and Toledo Railway | 2 |
| Concord and Claremont Railroad | 2 |
| Connecticut River Railroad | 1 |
| Contoocook River Railroad | 1 |
| Cumberland Valley Railroad | 2 |
| Danbury and Norwalk Railroad | 1 |
| Dansville and Mount Morris Railroad | 2 |
| Danville and Western Railway | 1 |
| Dauphin and Susquehanna Railroad | 1 |
| Dayton and Michigan Railroad | 1 |
| Delaware and Hudson Railway | 2 |
| Delaware Railroad | 1 |
| Delaware, Lackawanna and Western Railroad | 3 |
| Denver and Rio Grande Railroad | 3 |
| Denver and Rio Grande Western Railway | 3 |
| Des Moines Navigation and Railroad Company | 1 |
| Detroit and Bay City Railroad | 1 |
| Detroit and Milwaukee Railroad | 1 |
| Detroit and Toledo Railroad | 1 |
| Detroit Monroe Toledo Railroad | 1 |
| Detroit, Grand Haven and Milwaukee Railway | 1 |
| Detroit, Lansing and Northern Railroad | 1 |
| Duluth and Iron Range Railroad | 2 |
| Duluth, Missabe and Northern Railway | 1 |
| Duluth, South Shore and Atlantic Railway | 2 |
| Dunkirk, Allegheny Valley and Pittsburgh Railroad | 1 |
| East Carolina Railway | 1 |
| East Pennsylvania Railroad | 2 |
| East Tennessee Virginia and Georgia Railway | 2 |
| Eastern Kentucky Railway | 1 |
| Eastern Shore Railroad | 1 |
| Elgin, Joliet and Eastern Railway | 1 |
| Erie and Pittsburgh Railroad | 3 |
| Erie Canal Commission | 11 |
| Erie Railroad | 10 |
| Evansville and Terre Haute Railroad | 1 |
| Fitchburg Railroad | 1 |
| Flemington Railroad | 5 |
| Flint and Pere Marquette Railroad | 1 |
| Florida Railroad Company | 2 |
| Fort Wayne and Jackson Railroad | 1 |
| Fort Worth and Denver City Railroad | 1 |
| Freehold and Jamesburg Agricultural Railroad | 2 |
| Galveston, Harrisburg and San Antonio Railway | 3 |
| Galveston, Houston and Northern Railway | 1 |
| Georgia Pacific Railway | 1 |
| Georgia Southern and Florida Railway | 1 |
| Grafton and Upton Railroad | 1 |
| Grand French Railroad | 1 |
| Grand Trunk Railway | 2 |
| Great Northern Railway Line | 1 |
| Gulf, Colorado and Santa Fe Railway | 6 |
| Hannibal and St Joseph Railroad | 5 |
| Hartford and New Haven Railroad | 2 |
| Hartford, Providence and Fishkill Railroad | 3 |
| Housatonic Railroad | 1 |
| Houston and Texas Central Railroad | 1 |
| Hudson and Boston Railroad | 1 |
| Hudson River Railroad | 3 |
| Huntington and Broad Top Railroad | 1 |
| Illinois and Michigan Canal | 1 |
| Illinois Central Railroad | 5 |
| Indiana and Illinois Central Railroad | 1 |
| Indianapolis Decatur and Western Railway | 1 |
| Indianapolis, Decatur and Springfield Railroad | 1 |
| International and Great Northern Railroad | 4 |
| James River and Kanawha Canal Company | 1 |
| Kanawha and Michigan Railway | 1 |
| Kansas City Southern Railway | 3 |
| Kansas City, Fort Scott and Gulf Railroad | 2 |
| Kansas City, Fort Scott and Memphis Railroad | 2 |
| Kansas City, Lawrence and Southern Kansas Railroad | 1 |
| Kansas City, Memphis and Birmingham Railroad | 1 |
| Kansas City, St Joseph and Council Bluffs Railroad | 4 |
| Kansas Pacific Railway | 2 |
| Kennebec and Portland Railroad | 3 |
| Kentucky Central Railroad | 4 |
| Lackawanna and Western Railroad | 1 |
| Lake Erie and Louisville Railroad | 1 |
| Lake Erie and Western Railroad | 1 |
| Lake Erie, Wabash and St Louis Railroad | 2 |
| Lake Shore and Michigan Southern Railway | 7 |
| Leavenworth, Kansas and Western Railway | 2 |
| Lebanon Springs Railroad | 1 |
| Lehigh Valley Railroad | 1 |
| Ligonier Valley Railroad | 3 |
| Little Rock and Fort Smith Railroad | 1 |
| Long Island Railroad | 3 |
| Louisville and Nashville Railroad | 6 |
| Louisville, Evansville and St Louis Railroad | 2 |
| Louisville, New Albany and Chicago Railroad | 1 |
| Macon and Brunswick Railroad | 1 |
| Macon and Western Railroad | 1 |
| Maine Central Railroad | 2 |
| Manchester and Lawrence Railroad | 1 |
| Manhattan Railway | 1 |
| Maryland and Delaware Railroad | 2 |
| Mason-Hoge Railroad Construction Co. | 2 |
| Memphis and Charleston Railroad | 1 |
| Merrimack and Connecticut River Railroad | 1 |
| Metropolitan Railroad | 4 |
| Mexican Central Railway Company | 1 |
| Mexican National Railroad | 1 |
| Mexico and Pacific Railroad | 1 |
| Michigan Central Railroad | 10 |
| Michigan Southern and Northern Indiana Railroad | 1 |
| Middletown and Cincinnati Railroad | 1 |
| Milwaukee and Watertown Railroad | 1 |
| Milwaukee, Lake Shore and Western Railway | 3 |
| Minneapolis and St Louis Railroad | 3 |
| Minneapolis, St Paul and Sault St Marie Railway | 4 |
| Minnesota and Pacific Railroad | 1 |
| Mississippi and Missouri Railroad | 1 |
| Mississippi and Tennessee Railroad | 1 |
| Mississippi Central Railroad | 1 |
| Missouri Pacific Railway | 5 |
| Missouri, Kansas and Texas Railway | 6 |
| Mobile and Montgomery Railroad | 2 |
| Mobile and Ohio Railroad | 5 |
| Morris and Essex Railroad | 2 |
| Nashua and Lowell Railroad | 1 |
| Nashville, Chattanooga and St Louis Railway | 1 |
| Nevada Central Railroad | 1 |
| New Bedford and Taunton Railroad | 1 |
| New England Railroad Conference Commission | 1 |
| New Haven and Northampton Railroad | 1 |
| New Jersey Railroad and Transportation Company | 1 |
| New London Northern Railroad | 3 |
| New London, Willamantic and Palmer Railroad | 1 |
| New Orleans and Mobile Railroad | 1 |
| New Orleans and Northeastern Railroad | 2 |
| New Orleans and Northwestern Railway | 1 |
| New Orleans Jackson and Great Northern Railroad | 1 |
| New York and Boston Cape Cod Canal Co | 1 |
| New York and Erie Railroad | 4 |
| New York and Harlem Railroad | 3 |
| New York and New England Railroad | 4 |
| New York and Northern Railway | 1 |
| New York Central and Hudson River Railroad | 5 |
| New York Central Railroad | 11 |
| New York Elevated Railroad | 1 |
| New York, Chicago and St Louis Railroad | 2 |
| New York, Lake Erie and Western Railroad | 4 |
| New York, New Haven and Hartford Railroad | 3 |
| New York, Pennsylvania and Ohio Railroad | 1 |
| New York, Philadelphia and Norfolk Railroad | 1 |
| New York, West Shore and Buffalo Railway | 1 |
| Newark and Bloomfield Railroad | 1 |
| Norfolk and Western Railway | 2 |
| Norfolk County Railroad | 1 |
| North Carolina Railroad | 9 |
| North Pennsylvania Railroad | 1 |
| Northern Alabama Railway | 3 |
| Northern Central Railway | 1 |
| Northern New Hampshire Railroad | 1 |
| Northern New York Railroad | 1 |
| Northern Pacific Railroad | 7 |
| Norwich and Worcester Railroad | 3 |
| Ogdensburg and Lake Champlain Railroad | 2 |
| Ohio and Mississippi Railroad | 2 |
| Old Colony Railroad | 3 |
| Orange and Alexandria Railroad | 1 |
| Order of Railway Conductors | 1 |
| Oregon Railroad and Navigation Company | 3 |
| Oregon Short Line Railroad | 2 |
| Oxford and Henderson Railroad | 1 |
| Panama Railway | 4 |
| Passumpic Railroad | 1 |
| Paterson and Hudson River Railroad | 1 |
| Pennsylvania Railroad | 13 |
| Peoria and Bureau Valley Railroad | 1 |
| Peoria Decatur and Evansville Railroad | 2 |
| Philadelphia and Baltimore Central Railroad | 1 |
| Philadelphia and Erie Railroad | 2 |
| Philadelphia and Reading Railroad | 2 |
| Philadelphia and Trenton Railroad | 1 |
| Philadelphia Baltimore & Washington Railroad | 1 |
| Philadelphia, Germantown and Norristown Railroad | 1 |
| Philadelphia, Wilmington and Baltimore Railroad | 5 |
| Pittsburgh and Connellsville Railroad | 1 |
| Pittsburgh and Eastern Railroad | 1 |
| Pittsburgh and Lake Erie Railroad | 2 |
| Pittsburgh and Western Railroad | 1 |
| Pittsburgh, Chartiers and Youghiogheny Railway | 1 |
| Pittsburgh, Cincinnati and St Louis Railway | 1 |
| Pittsburgh, Fort Wayne and Chicago Railway | 1 |
| Portland and Ogdensburg Railroad | 1 |
| Portsmouth and Concord Railroad | 1 |
| Portsmouth and Roanoke Railroad | 1 |
| Poughkeepsie and Eastern Railway | 2 |
| Providence and Boston Railroad | 1 |
| Raleigh and Gaston Railroad | 3 |
| Raquette Lake Railway | 1 |
| Rensselaer and Saratoga Railroad | 1 |
| Richmond and Danville Railroad | 7 |
| Rio Grande Junction Railway Company | 1 |
| Rio Grande Western Railway | 1 |
| Rochester and Pittsburgh Railroad | 1 |
| Rochester and State Line Railroad | 1 |
| Rome, Watertown and Ogdensburg Railroad | 1 |
| Rutland and Whitehall Railroad | 1 |
| Rutland Railroad | 2 |
| Sacramento Valley Railroad | 1 |
| San Antonio and Aransas Pass Railway | 2 |
| San Francisco and San Joaquin Valley Railway | 1 |
| Santa Fe and Grand Canyon Railroad | 1 |
| Saratoga and Schenectady Railroad | 2 |
| Saratoga and Whitehall Railroad | 2 |
| Savannah and Memphis Railroad | 2 |
| Savannah, Florida and Western Railway | 1 |
| Schuylkill and Susquehanna Railroad | 1 |
| Shore Line Railway | 2 |
| Somerset and Kennebec Railroad | 2 |
| Soo Line Railroad | 2 |
| South Carolina Canal and Railroad Company | 1 |
| South Carolina Railroad | 1 |
| Southern California Railway | 1 |
| Southern Pacific Railroad | 9 |
| Southern Railroad | 1 |
| Southern Railway | 8 |
| St Lawrence and Adirondack Railway | 1 |
| St Louis and Cincinnati Railroad | 1 |
| St Louis and Iron Mountain Railroad | 1 |
| St Louis and San Francisco Railroad | 2 |
| St Louis and Southeastern Railroad | 1 |
| St Louis Southwestern Railway | 2 |
| St Louis, Iron Mountain and Southern Railway | 2 |
| St Louis, Kansas City and Northern Railway | 2 |
| St Paul & Chicago Railroad | 1 |
| St Paul & Pacific Railroad | 1 |
| St Paul and Duluth Railroad | 3 |
| St Paul and Pacific Railroad | 1 |
| St Paul and Sioux City Railroad | 1 |
| St Paul, Minneapolis and Manitoba Railway | 1 |
| Staten Island Railway | 1 |
| Stem Railroad | 1 |
| Terre Haute and Alton Railroad | 2 |
| Terre Haute and Indianapolis Railroad | 1 |
| Texas and New Orleans Railroad | 4 |
| Texas and Pacific Railway | 6 |
| Texas Electric Railway | 1 |
| Tioga Railroad | 1 |
| Toledo and Illinois Railroad | 1 |
| Toledo and Ohio Central Railway | 2 |
| Toledo and Wabash Railroad | 1 |
| Toledo, Delphos and Burlington Railroad | 1 |
| Toledo, Peoria and Warsaw Railroad | 2 |
| Toledo, St Louis and Kansas City Railroad | 1 |
| Toledo, Wabash and Western Railroad | 1 |
| Troy and Boston Railroad | 1 |
| Troy and Greenbush Railroad | 1 |
| Union Pacific Railroad | 19 |
| United Railroads of San Francisco | 1 |
| United States Transcontinental Railroad | 1 |
| US House Committee on Railways and Canals | 2 |
| Utica and Schenectady Railroad | 1 |
| Utica, Ithaca and Elmira Railroad | 1 |
| Vandalia Line Railway | 1 |
| Vermont and Massachusetts Railroad | 1 |
| Vermont Valley Railroad | 2 |
| Virginia Central Railroad | 1 |
| Virginia Midland Railway | 2 |
| Wabash Railroad | 5 |
| Wabash, St Louis and Pacific Railway | 5 |
| Washington & Ohio Railroad | 1 |
| Washington and Georgetown Railroad | 2 |
| Washington and Old Dominion Railroad | 1 |
| Waynesburgh and Washington Railroad | 1 |
| Wellington and Powellsville Railroad | 1 |
| West Feliciana Railroad | 1 |
| West Jersey and Seashore Railroad | 1 |
| West Shore Railroad | 3 |
| West Virginia Central and Pittsburgh Railway | 2 |
| West Wisconsin Railway | 1 |
| Western Maryland Railroad | 2 |
| Western North Carolina Railroad | 1 |
| Western Railroad of Massachusetts | 1 |
| Western Railway of Alabama | 1 |
| Wheeling and Lake Erie Railroad | 3 |
| Wheeling Terminal Railway | 1 |
| Wilmington and Manchester Railroad | 1 |
| Wilmington and Northern Railroad | 1 |
| Wilmington and Raleigh Railroad | 1 |
| Wilmington and Susquehanna Railroad | 1 |
| Wilmington and Weldon Railroad | 3 |
| Wilmington, Columbia and Augusta Railroad | 1 |
| Wisconsin Central Railroad | 1 |
| Wisconsin, Minnesota and Pacific Railway | 1 |
| Wyoming and Lehigh Railroad | 1 |
| Yazoo and Mississippi Valley Railroad (Y&MV) | 1 |
| York Harbor and Beach Railroad | 1 |
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