Author
"Old Northwest" Genealogical Society
1
1727 Society of Old First Reformed Church, United Church of Christ (Philadelphia, Pa.)
1
1745 Association and National Military History Society
1
2101 Cooperative (Philadelphia, Pa.)
1
250th York County Planning Commission (York, Pa.)
1
A Distinguished Lady of North Carolina
1
A Society in Edinburgh
1
A.M.
1
A.S.W. Rosenbach Fellowship in Bibliography Fund
1
AARW (Asian American Resource Workshop)
1
ABARTA Metro Publishing
1
ABC-Clio Information Services
2
ACEN (Organization)
1
ADC Research Institute
1
AIDS Fund (Philadelphia, Pa.)
2
AIDS Information Network (Philadelphia, Pa.)
2
AIM, Inc. (Glendale, Calif.)
1
ALS Association Greater Philadelphia Chapter
1
ASPIRA of New York
1
ATLATL (Organization)
1
Aalborg universitetscenter. Danske udvandrerarkiv
1
Aaron Burr Association
1
Abbatt, William
1
Abbatt, William, 1851-1935
2
Abbot, W.W. 1922-
1
Abbott, George
1
Abbott, Lyman, 1835-1922
1
Abercromby, James, 1707-1775
1
Abernethy, Thomas Perkins, 1890-
1
Abington (Montgomery County, Pa. : Township) Public Library
1
Aborigines Protection Society (Great Britain)
1
Abraham Lincoln Museum (Harrowgate, Tenn.)
1
Abraham, James Johnston, 1876-1
1
Academy House (Philadelphia, Pa.)
1
Academy of Certified Archivists
1
Academy of Music (Philadelphia, Pa.)
1
Academy of Natural Sciences of Philadelphia
5
Acker, Finley
1
Ackerman, Karen T.
1
Ackermann, Rudolph, 1764-1834
1
Action Irish
1
Action Sociale Catholique
1
ActionAIDS (Philadelphia, Pa. : Organization)
2
Acton, Alfred
1
Aczel, Aurel
1
Aczél, Aurél
1
Adam, Antoinette, 1905-
1
Adamic, Louis, 1899-1951
3
Adams, Brooks, 1848-1927
1
Adams, Charles Francis, 1835-1915
2
more ...