Other
Library of Congress
29
Historical Society of Pennsylvania
28
Virginia State Library
19
Historical Records Survey (U.S.)
13
Pennsylvania Historical and Museum Commission
12
Library Company of Philadelphia
11
Schweitzer, George Keene, 1924-
11
United States. National Archives and Records Administration
11
National Archives (U.S.)
10
United States. Work Projects Administration. Division of Community Service Programs
9
Ethnikos Kēryx (New York, N.Y.)
8
Gibson, Jeremy Sumner Wycherley
8
William L. Clements Library
8
Beers, Henry Putney, 1907-
7
Hasse, Adelaide R. 1868-1953
7
Library of Congress. Map Division
7
New England Historic Genealogical Society
7
New York Public Library
7
Steiger, Ernst, 1832-1917
7
Bowker, R. R. 1848-1933
6
Ethnic Heritage Studies Program (U.S.)
6
Ford, Paul Leicester, 1865-1902
6
John Carter Brown Library
6
Library of Congress. Geography and Map Division
6
Pennsylvania Historical Commission
6
Phillips, Philip Lee, 1857-1924
6
Rath, Frederick L.
6
Sabin, Joseph, 1821-1881
6
Arndt, Karl John Richard
5
Balch Institute for Ethnic Studies
5
Boston Public Library
5
Crumrine, Boyd, 1838-1916
5
Griffin, Appleton P. C. 1852-1926
5
Historical Records Survey (Me.)
5
Hoenstine, Floyd G.
5
Hoglund, A. William
5
Kirkham, E. Kay
5
Library of Congress. Music Division
5
Newberry Library
5
O'Connell, Merrilyn Rogers
5
Sinclair, Donald A.
5
State Historical Society of Wisconsin
5
Stevens, Henry, Jr., 1819-1886
5
Survey of Federal Archives (U.S.) Pennsylvania
5
United States. National Historical Publications Commission
5
University of Pennsylvania. Library
5
Wroth, Lawrence C. 1884-1970
5
American Association for State and Local History
4
American Historical Association
4
American Philosophical Society
4
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