Author
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Adger, R. M.
1
Adger, Robert Mara, 1837-1910
1
Adirondack Mountain Club
1
Ady, John, -1812
3
Aero Club of Pennsylvania
1
African American Pamphlet Collection (Library of Congress)
10
African Colonization Friends Meeting
1
African Institution (London, England)
3
African slave trade African Squadron
1
Agnew, Daniel, 1809-1902
1
Agricola
2
Agricultural Society of Bucks County (Pa.)
1
Aikman, William, 1824-1909
1
Aitken, Robert, 1735-1802,
1
Aĭzman, Garri
1
Albany Institute
1
Albany, N.Y North Dutch Reformed Church
1
Albert M. Greenfield, 1887-1967
4
Albertype Co
1
Allegheny Conference on Community Development (Pa.)
1
Allen, Benjamin, 1789-1829
1
Allen, James S.
1
Allen, James Stewart, 1906-
2
Allen, Joshua Gibbons, 1832-1903
1
Allen, Richard, 1760-1831
1
Allen, Robert L., 1942-
1
Allen, Thomas, 1608-1673
5
Allen, William, 1710 (ca. )-1780
1
Alliance Francaise de Philadelphie
1
Allyn, John, 1767-1833
1
Almon, John, 1737-1805
1
Alms-House (Philadelphia, Pa.)
1
Alotta, Robert I.
1
Amalgamated Clothing Workers of America
1
American Academy of Arts and Sciences
1
American Almanac Collection (Library of Congress)
1
American Anti-Slavery Society
2
American Antiquarian Society
4
American Association for the Advancement of Science
1
American Association of Teachers of Spanish and Portuguese. Southeastern Penna. Chapter. Bicentennial Committee
1
American Car & Foundry Motors Company (Philadelphia)
1
American Colonization Society
2
American Colonization Society, 1786-1919
1
American Color Print Society
1
American Committee for Protection of Foreign Born
1
American Committee of Justice,
1
American Convention for Promoting the Abolition of Slavery and Improving the Condition of the African Race
1
American Friends Service Committee. Refugee Section
2
American Friends of Czechoslovakia
1
American Historical Society
1
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