Author
Historical Society of Pennsylvania
87
Library of Congress
47
Pennsylvania Academy of the Fine Arts
36
M. Thomas & Sons (Auctioneers : Philadelphia)
35
Philadelphia Museum of Art
30
Kennedy Galleries
29
United States. National Archives and Records Service
29
Maryland State Archives
26
Centennial Exhibition Philadelphia, Pa.)
25
Library of Congress. Manuscript Division
21
Library Company of Philadelphia
19
United States. National Archives and Records Administration
19
Kennedy Galleries (New York)
18
American Philosophical Society
16
Balch Institute for Ethnic Studies
16
National Portrait Gallery (Smithsonian Institution)
14
U.S Centennial Commission
14
Pennsylvania Historical and Museum Commission
13
Apprentices' Library Company of Philadelphia
11
Corcoran Gallery of Art
11
Museum of Fine Arts, Boston
11
University of Minnesota. Immigration History Research Center
11
American Library Association
10
Bryn Mawr College
10
Free Library of Philadelphia
10
Hirschl & Adler Galleries
10
Maryland Historical Society
10
Pennsylvania Historical and Museum Commission. Division of Archives and Manuscripts
10
Princeton University. Library
10
Ukrainian Museum (New York, N.Y.)
10
United States. National Historical Publications Commission
10
Henry Francis du Pont Winterthur Museum
9
Independence Hall (Philadelphia, Pa.)
9
Library of Congress. Geography and Map Division
9
Princeton Theological Seminary
9
United States Centennial Commission
9
Baldwin Locomotive Works
8
Bonnemains, Jacqueline
8
Boston Public Library
8
Ethnikos Kēryx (New York, N.Y.)
8
Fitzpatrick, John Clement, 1876-1940
8
Historic American Buildings Survey
8
John Carter Brown Library
8
Lesueur, Charles Alexandre, 1778-1846
8
National Archives (U.S.)
8
Newberry Library
8
Schwarz Philadelphia (Gallery)
8
Sotheby's (Firm)
8
Allentown Art Museum
7
American Latvian Association in the United States
7
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