Author
(H. J.) Heinz Co
1
A layman
1
A.D. Marble & Co
1
Adams, Charles J. 1947-
1
Adamson, John Howard
1
Agnew, Daniel, 1809-1902
4
Albert E. Deeds Associates
2
Albertype Co
1
Alexander, June Granatir
2
Alexander, June Granatir, 1948-
1
Algeo, Matthew
1
Allegheny (Pa.)
3
Allegheny (Pa.) Committee on Public Library
2
Allegheny (Pa.) Third Ward School
2
Allegheny Cemetery
1
Allegheny Cemetery (Pittsburgh)
2
Allegheny Cemetery (Pittsburgh, Pa.)
2
Allegheny Centennial Committee
1
Allegheny City Society
1
Allegheny County (Pa.)
2
Allegheny County (Pa.) 125th Anniversary Transportation Day Committee
1
Allegheny County (Pa.) Anniversary Transportation Day Committee
1
Allegheny County (Pa.) Fire Marshal
2
Allegheny County Bar Association
1
Allegheny Marketing Group (Pittsburgh, Pa.)
1
Alzo, Lisa A.
3
American Bankers Association
1
American Folklife Center
1
American Historical Society
1
American Hungarian Educators' Association
1
American Window Glass Company
2
Anderson, Jerome E.
1
Andrews, J. Cutler, 1908-
1
Annunciation Church of the Blessed Virgin (Pittsburgh, Pa.)
1
Archives of Czechs and Slovaks Abroad
1
Armstrong, John
1
Asher, Robert, 1944-
1
Associate Synod of North America
1
Associated Artists of Pittsburgh
1
Aurand, Martin
2
Austin, Heather
1
Autonomist
1
Avey and Irish
1
Åkerman, Rich. 1837-1922
2
Babbitt, E. L.
1
Babcock, Edward Vose, 1864-1948
1
Badali, William A.
2
Baer, John M.
1
Baird, Thomas Dickson, 1773-1839
1
Bakewell, Mary Ellis, 1868-
1
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