Author
State Library of Pennsylvania
90
Pennsylvania State Library
73
Pennsylvania Historical and Museum Commission
50
State Library of Pennsylvania. Library Development Division
47
David J. Holmes Autographs (Firm)
41
Pennsylvania. Department of Education
40
Library Company of Philadelphia
35
Historical Society of Pennsylvania
32
Pennsylvania
29
Pennsylvania Library Association
28
Pennsylvania. General Assembly
28
Educational Resources Information Center (U.S.)
24
Saunders, Richard
22
Running Press Imprint Collection (University of Pennsylvania)
21
Pennsylvania Historical Commission
20
Pennsylvania. Council of Safety
20
Pennsylvania. Department of Public Instruction
19
Apprentices' Library Company of Philadelphia
17
Free Library of Philadelphia
17
Pennsylvania Historical and Museum Commission. Division of Archives and Manuscripts
17
University of Pennsylvania. Library
16
Great Britain. Army
14
Martin, Lowell A. (Lowell Arthur), 1912-2003
14
Pennsylvania State Library. Bureau of Library Development
14
Rittenhouse, David, 1732-1796
14
Wolf, Edwin, 1911-1991
14
Cash, Caleb
13
Pennsylvania Historical Association
13
Southwark Theatre (Philadelphia, Pa.)
13
State Library of Pennsylvania. Bureau of Library Development
13
Hoenstine, Floyd G.
12
American Philosophical Society
11
Bordner, George W. (George Wilson), 1918-2008
11
Carey, Mathew, 1760-1839
11
Pennsylvania State University. Institute of Public Administration
11
Pennsylvania. Office of Commonwealth Libraries
11
Pennsylvania. Supreme Executive Council
11
Pittsburgh Bibliophiles (Society)
11
Tobler, John, 1696-1765
11
Trussell, John B. B.
11
United States. Continental Congress
11
Bird & Bull Press
10
Franklin, Benjamin, 1706-1790
10
Pennsylvania State Library. Library Extension Division
10
Pennsylvania. Bureau of Topographic and Geologic Survey
10
Wilkinson, Norman B.
10
Christ Church (Philadelphia, Pa.)
9
Hildeburn, Charles R. (Charles Riché), 1855-1901
9
Jerman, John, 1684-1769
9
University of Pennsylvania. Libraries
9
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