Author
(Eugene) Klein Inc. (Philadelphia)
1
(J.H.) Zeilin & Co. (Philadelphia)
1
21st Pennsylvania Cavalry Association
1
A Society in Edinburgh
1
A. W. Straub Co. (Philadelphia)
1
ABARTA Metro Publishing
1
ACF-Brill Motors Company
2
ACF-Brill Motors Company (Philadelphia)
1
AIDS Information Network (Philadelphia, Pa.)
1
Abington (Montgomery County, Pa. : Township) Board of Commissioners
1
Abington (Montgomery County, Pa. : Township) Public Library
1
Abington (Pa.) Presbyterian Church Historical Society
2
Abington Library Society (Jenkintown, Pa.)
1
Abraham Lincoln Association (Springfield, Ill.)
1
Abraham, Father
1
Academy for Educational Development
1
Academy of Music (Philadelphia)
2
Academy of Music (Philadelphia, Pa.)
1
Academy of Music of Philadelphia
2
Academy of Natural Sciences of Philadelphia
3
Academy of Natural Sciences of Philadelphia Mineralogical and Geological Section
1
Academy of the New Church
1
Academy of the New Church (Bryn Athyn, Pa.)
3
Ackworth Old Scholars Association
1
Acorn Club
3
Adams, Sampson & Co
1
Adams, W. E.
1
Addeman
1
Addison, H. R. 1805?-1876
1
Addison, Joseph, 1672-1719
1
Adler, Cyrus, 1863-1940
1
Adoption Forum of Philadelphia
4
African Institution (London, England)
1
African Methodist Episcopal Church
3
African Methodist Episcopal Church. New York Conference
1
African Studies Association
1
Afro-American Baptist Association of New Jersey
1
Afternoons With Science (Club)
1
Afternoons with Science (Club)
1
Ager, Waldemar, 1869-1941,
2
Agnew, John Holmes, 1804-1865
1
Agricultural College of Pennsylvania
1
Agricultural Society and Institute of New Castle County, Del
1
Aiken (S.C.)
1
Aitken, Robert, 1735-1802
1
Albany (N.Y.) State Prison
1
Albany Institute
2
Albany Manual Labor University
1
Albemarle County Historical Society
1
Albemarle County Historical Society (Va.)
1
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