Author
Historical Society of Pennsylvania
68
Library of Congress
37
M. Thomas & Sons (Auctioneers : Philadelphia)
35
United States. National Archives and Records Service
29
Maryland State Archives
26
Centennial Exhibition Philadelphia, Pa.)
25
Philadelphia Museum of Art
23
Library of Congress. Manuscript Division
21
Kennedy Galleries
19
Pennsylvania Academy of the Fine Arts
19
United States. National Archives and Records Administration
19
Kennedy Galleries (New York)
17
American Philosophical Society
16
Library Company of Philadelphia
15
U.S Centennial Commission
14
Pennsylvania Historical and Museum Commission
12
Apprentices' Library Company of Philadelphia
11
University of Minnesota. Immigration History Research Center
11
Bryn Mawr College
10
Maryland Historical Society
10
Museum of Fine Arts, Boston
10
Pennsylvania Historical and Museum Commission. Division of Archives and Manuscripts
10
Ukrainian Museum (New York, N.Y.)
10
United States. National Historical Publications Commission
10
Free Library of Philadelphia
9
Independence Hall (Philadelphia, Pa.)
9
Library of Congress. Geography and Map Division
9
Princeton Theological Seminary
9
Princeton University. Library
9
United States Centennial Commission
9
American Library Association
8
Baldwin Locomotive Works
8
Bonnemains, Jacqueline
8
Boston Public Library
8
Ethnikos Kēryx (New York, N.Y.)
8
Fitzpatrick, John Clement, 1876-1940
8
Lesueur, Charles Alexandre, 1778-1846
8
National Archives (U.S.)
8
Newberry Library
8
American Latvian Association in the United States
7
Apprentices' Library Company of Philadelphia. Girls' Department
7
Balch Institute for Ethnic Studies
7
Centennial Exhibition
7
Christie, Manson & Woods International Inc
7
Henry Francis du Pont Winterthur Museum
7
Historic American Buildings Survey
7
Landis Valley Museum
7
Library of Congress. Catalog Publication Division
7
Library of Congress. Map Division
7
Miller, Steve
7
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