Author
"Old Northwest" Genealogical Society
1
250th York County Planning Commission (York, Pa.)
1
ABC-Clio Information Services
1
Aalborg universitetscenter. Danske udvandrerarkiv
1
Abbatt, William, 1851-1935
1
Afro-American Historical Association of the Niagara Frontier
2
Afro-American Historical and Genealogical Society (Washington, D.C.)
3
Agricultural History Society
1
Albert Einstein College of Medicine
1
Alexander, Edward P. 1907-
1
Allaben, Frank
1
Almon, John, 1737-1805
2
Alvord, Clarence Walworth, 1868-1928
1
American Anti-Slavery Society
1
American Antiquarian Society
5
American Antiquarian Society. Program in the History of the Book in American Culture
1
American Association of the Philippines. American Historical Committee
1
American Battlefield Protection Program (U.S.)
1
American Bibliographical Center
2
American Catholic Historical Society of Philadelphia
2
American Chemical Society
1
American Clock & Watch Foundation
1
American Council for Polish Culture
1
American Council of Polish Cultural Clubs
2
American Heritage Society
2
American Historical Association
6
American Institute of Chemical Engineers
1
American Italian Historical Association
2
American Italian Historical Association Long Island Regional Chapter (N.Y.)
1
American Italian Historical Association Maryland-Washington, D.C. Chapter
1
American Italian Historical Association Western Regional Chapter
1
American Jewish Historical Society
8
American Jewish Tercentenary Committee
1
American Latvian Association in the United States
2
American Latvian Association in the United States. Information Bureau
1
American Society of Architectural Historians
2
American Swedish Historical Foundation
1
American Swedish Historical Museum (Philadelphia, Pa.)
1
American Swedish Institute (Minneapolis, Minn.)
1
American-Arab Anti-Discrimination Committee
1
American-Irish Historical Society
1
Amery, John S.
1
Amery, John S.,
1
Amery, Peter Fabyan Sparke, 1908
1
Amistad Affiliates
1
Amistad Research Center
2
Anderson, R. C. 1883-1976
1
Andrews, Frank DeWette, 1847-1937
1
Archives and Special Collections on Women in Medicine
1
Association for Documentary Editing
3
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