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Organization/Membership Index

Names of membership, civic, society, or fraternal organizations, committees, or conferences, with the number of people related to each. 🔵 has historical records; 🔴 has infrastructure

1
Pacific Astronomical Society 🔵
1
Pacific Electric Company
3
Pacific Fleet
1
Pacific Fruit and Produce Company
1
Pacific Railroad of Missouri 🔵
5
Pacific Squadron
1
Paducah and Elizabethtown Railroad 🔵
1
Paducah and Memphis Railroad 🔵
1
Paducah Tennessee and Alabama Railroad 🔵
1
Painesville and Youngstown Railroad 🔵
1
Palisades Geophysical Institute
1
Palisades Interstate Park Commission
1
Palm Beach Daily News
1
Pan-American Conferences
1
Pan-American Congress
6
Panama Railway 🔵
2
Parent Teachers Association
1
Paris Exhibition of 1878
1
Paris Peace Conference
2
Passumpsic Railroad 🔵
12
Patentee of New Paltz
1
Paterson and Hudson River Railroad 🔵
1
Paterson and Ramapo Railroad 🔵
7
Paymaster of the Forces
1
Peabody Education Fund
1
Peabody Museum of Archaeology and Ethnology
1
Peabody Museum of Yale
17
Peace Congress 1861
4
Peace Corps
1
Peace River Phosphate Mining Company 🔵
1
Peach Bottom Railroad 🔵
2
Pearl Harbor Survivors Association
1
Pecos Valley Railway 🔵
2
Peninsula Railroad 🔵
3
Peninsular Car Company
1
Penn State College
1
Pennsylvania Academy of Fine Arts
1
Pennsylvania Agricultural Society
2
Pennsylvania Anti-Slavery Society
1
Pennsylvania Bar Association
1
Pennsylvania Bolt and Nut Co 🔵
2
Pennsylvania College of Technology
3
Pennsylvania Constitutional Convention
3
Pennsylvania East Railroad 🔵
1
Pennsylvania Food Processors
1
Pennsylvania Horticulture Council
1
Pennsylvania Journal
3
Pennsylvania Lines West of Pittsburgh Northwest 🔵
3
Pennsylvania Lines West of Pittsburgh Southwest 🔵
1
Pennsylvania National Guard
25
Pennsylvania Railroad 🔵 🔴
7
Pennsylvania State Convention
1
Pennsylvania State University
3
Peoria and Bureau Valley Railroad 🔵
2
Peoria Decatur and Evansville Railroad 🔵
1
Peoria, Pekin and Jacksonville Railroad 🔵
3
Pepsi-Cola Bottling Company
11
Pere Marquette Railroad 🔵
1
Permanent Court of Arbitration
1
Permanent Court of International Justice
1
Peter Pan Club
1
Petersburg Railroad 🔵
8
Phelps Dodge and Company
25
Phi Beta Kappa 🔵
2
Phi Delta Kappa
3
Phi Delta Theta
1
Phi Gamma Delta
1
Phi Kappa Psi
1
Phi Sigma Kappa
2
Philadelphia and Baltimore Central Railroad 🔵
4
Philadelphia and Erie Railroad 🔵
13
Philadelphia and Reading Railroad 🔵
2
Philadelphia and Trenton Railroad 🔵 🔴
5
Philadelphia Athletics
1
Philadelphia Baltimore and Washington Railroad 🔵
1
Philadelphia Belt Line Railroad 🔵
1
Philadelphia Eagles
1
Philadelphia Female Anti-Slavery Society
1
Philadelphia Medical Society
1
Philadelphia Museum of Art
4
Philadelphia Naval Asylum
4
Philadelphia Naval Shipyard
13
Philadelphia Phillies
1
Philadelphia, Germantown and Norristown Railroad 🔵
12
Philadelphia, Wilmington and Baltimore Railroad 🔵 🔴
1
Philanthropic Society
1
Phillips Academy
1
Phillips Petroleum
1
Philodemic Society
1
Philolexian Society
1
Philomathean Society
1
Philosophical Society of Washington 🔵
1
Phoenix Suns
1
Pickands Mather and Company
4
Pilgrims Society
2
Pillsbury Company
1
Pine Grove Furnace 🔵
1
Pioneer Fund
1
Pittsburgh Alleghenys
2
Pittsburgh and Connellsville Railroad 🔵
1
Pittsburgh and Eastern Railroad 🔵
3
Pittsburgh and Lake Erie Railroad 🔵
1
Pittsburgh and Western Railroad 🔵
10
Pittsburgh Pirates
1
Pittsburgh, Chartiers and Youghiogheny Railway 🔵
6
Pittsburgh, Cincinnati and St Louis Railway 🔵
8
Pittsburgh, Fort Wayne and Chicago Railroad 🔵
1
Plattekill Town Supervisor
1
Plaza Hotel
12
Police Department
1
Political Science Association
1
Pontiac and Oxford Railroad 🔵
1
Pontiac and Southern Railroad 🔵
3
Pontiac, Oxford and Northern Railroad 🔵
1
Pontiac, Oxford and Port Austin Railroad 🔵
2
Pony Express
7
Porcellian Club
1
Port Huron and Lake Michigan Railroad 🔵
2
Port Huron, St Clair and Marine City Railroad 🔵
2
Port of Baltimore
2
Port of Boston
1
Port of Cincinnati
1
Port of Georgetown
2
Port of New York
1
Port Royal and Western Carolina Railway 🔵
1
Portage Railroad 🔵
3
Portland and Ogdensburg Railroad 🔵
3
Portland, Saco and Portsmouth Railroad 🔵
1
Portsmouth and Concord Railroad 🔵
1
Portsmouth and Roanoke Railroad
1
Portsmouth Navy Yard
2
Portsmouth, Great Falls and Conway Railroad 🔵
1
Post Foods
1
Post Office Department
2
Potomac Flotilla
2
Poughkeepsie and Eastern Railway 🔵
1
Presbyterian Women
1
President Pro Tempore of the Idaho Senate
2
President Pro Tempore of the US Senate
1
Presidential Medal of Freedom
9
Princeton Theological Seminary
64
Princeton University
1
Pro Football Hall of Fame
5
Procter and Gamble Co 🔵
2
Progressive Farmer
1
Providence and Boston Railroad
1
Providence and Springfield Railroad 🔵
1
Providence and Worcester Railroad 🔵
3
Providence Athenaeum
1
Providence Journal 🔵
1
Provincial Court
1
Psi Omega
4
Psi Upsilon
1
Pullman Palace Car Co 🔵
1
Pure Oil Refinery Company
2
Pythian Sisters