Author
Historical Society of Pennsylvania
23
Library of Congress
14
Library of Congress. Manuscript Division
14
United States. National Archives and Records Service
13
Library Company of Philadelphia
11
United States. National Archives and Records Administration
11
Ethnikos Kēryx (New York, N.Y.)
8
American Philosophical Society
6
John Carter Brown Library
6
Library of Congress. Geography and Map Division
6
Balch Institute for Ethnic Studies
5
Fitzpatrick, John Clement, 1876-1940
5
Library of Congress. Map Division
5
Pennsylvania Historical and Museum Commission. Division of Archives and Manuscripts
5
Beers, Henry Putney, 1907-
4
Library of Congress. Music Division
4
National Archives Trust Fund Board
4
Princeton University. Library
4
Scotch-Irish Foundation
4
Clemens, William Montgomery, 1860-1931
3
Connecticut State Library
3
Hamilton, Sinclair
3
Harvard University. Library
3
Historical Records Survey of Pennsylvania
3
Hoenstine Rental Library
3
Hoenstine, Floyd G.
3
Kaminkow, Marion J.
3
Ker, N. R.
3
Khouw, Petta
3
Le Gear, Clara Egli
3
Library of Congress. Catalog Division
3
Library of Congress. Humanities and Social Sciences Division
3
Maryland Historical Society
3
National Archives (U.S.)
3
New England Historic Genealogical Society
3
North Carolina. Division of Archives and History
3
Oregon Historical Society
3
Parke-Bernet Galleries
3
Pennsylvania Historical and Museum Commission
3
Phillips, Philip Lee, 1857-1924
3
Research Publications, inc
3
Sabin, Joseph, 1821-1881
3
Sotheby's (Firm)
3
State Historical Society of Wisconsin
3
Stevens, Henry, Jr., 1819-1886
3
Temple University. Libraries. Rare Book and Manuscript Department
3
University of Pennsylvania. Library
3
University of Virginia. Library
3
William L. Clements Library
3
American Art Association Anderson Galleries, Inc. (New York)
2
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