Author
- "Old Northwest" Genealogical Society 1 results
- "Plast" orhanizat︠s︡ii︠a︡ ukraïnsʹkoï molodi 1 results
- 1727 Society of Old First Reformed Church, United Church of Christ (Philadelphia, Pa.) 1 results
- 1745 Association and National Military History Society 1 results
- 2101 Cooperative (Philadelphia, Pa.) 1 results
- A Society in Edinburgh 1 results
- ABC-Clio Information Services 1 results
- ACEN (Organization) 1 results
- AIDS Fund (Philadelphia, Pa.) 2 results
- AIDS Information Network (Philadelphia, Pa.) 2 results
- AIM, Inc. (Glendale, Calif.) 1 results
- ALS Association Greater Philadelphia Chapter 1 results
- ATLATL (Organization) 1 results
- Aaron Burr Association 1 results
- Abbott, Lyman, 1835-1922 1 results
- Abington (Montgomery County, Pa. : Township) Public Library 1 results
- Aborigines Protection Society (Great Britain) 1 results
- Academy House (Philadelphia, Pa.) 1 results
- Academy of Certified Archivists 1 results
- Academy of Music (Philadelphia, Pa.) 1 results
- Academy of Natural Sciences of Philadelphia 5 results
- Académie canadienne-française 1 results
- Académie des lettres du Québec 1 results
- Académie royale des sciences, des lettres et des beaux-arts de Belgique. Classe des sciences 1 results
- Accademia di Paestum 1 results
- Ackermann, Rudolph, 1764-1834 1 results
- ActionAIDS (Philadelphia, Pa. : Organization) 2 results
- Acton, Alfred 1 results
- Aczel, Aurel 1 results
- Adam, Antoinette, 1905- 1 results
- Adamic, Louis, 1899-1951 2 results
- Adams, George Burton, 1851-1925 1 results
- Addison, Joseph, 1672-1719 1 results
- Adler, Cyrus, 1863-1940 2 results
- Adler, Elmer, 1884-1962 2 results
- Adolphus, Lalit 1 results
- African American Museum in Philadelphia 1 results
- African Methodist Episcopal Church 3 results
- African People's Socialist Party 1 results
- Afro-American Historical and Cultural Museum (Philadelphia, Pa.) 1 results
- Afro-American Historical and Genealogical Society (Washington, D.C.) 2 results
- Afro-American Research Institute (New York, N.Y.) 2 results
- Ager, Waldemar, 1869-1941, 1 results
- Agricultural History Society 1 results
- Agudat Iḥud (Israel) 1 results
- Agudath Israel of America 1 results
- Ahrens, Herman C., 1 results
- Alberta Native Communications Society 1 results
- Albertus-Magnus-Kolleg. Institutum Balticum 1 results
- Alcott, William A. (William Andrus), 1798-1859 1 results more…