Author
Historical Society of Pennsylvania
135
Pennsylvania Historical and Museum Commission
123
Frederic R. Kirkland Collection
106
Pennsylvania. Comptroller-General's Office
102
Newcomen Society of the United States
91
Jones, Richard S.
69
Archives of Czechs and Slovaks Abroad
67
United States. Work Projects Administration. Division of Professional and Service Projects
65
United States. Work Projects Administration. Division of Community Service Programs
52
New Jersey Historical Society
50
American Imprint Collection (Library of Congress)
46
New Jersey Historical Commission
44
Washington, George, 1732-1799
44
Ethnic Heritage Studies Program (U.S.)
39
Maryland Historical Society
39
United States. Department of State
39
Institute of Early American History and Culture (Williamsburg, Va.)
38
Egle, William Henry, 1830-1901
37
New-York Historical Society
37
Library of Congress. Congressional Research Service
36
Cunningham, John T.
35
Great Britain. Public Record Office
35
Lossing, Benson J. 1813-1891
35
Newcomen Society in North America
35
Library of Congress Congressional Research Service
34
New Jersey Historical Records Survey Project
34
Time-Life Books
34
Vermont Historical Records Survey
33
George de Benneville Keim Memorial Collection
32
Catholic Record Society (Great Britain)
31
Penn, William, 1644-1718
31
United States. Works Progress Administration. Division of Women's and Professional Projects
31
New Jersey Tercentenary Commission
30
Chester County Historical Society (West Chester, Pa.)
29
Historical Records Survey (U.S.) Ohio
29
Page, William, 1861-1934
29
State Historical Society of Wisconsin
29
Library of Congress
28
Elise Willing Balch Collection
27
Paine, Thomas, 1737-1809
27
Lebanon County Historical Society (Pa.)
26
Maryland State Archives
26
Pennsylvania Historical Commission
26
Abbott, Jacob, 1803-1879
25
American Historical Association
25
Carey, Mathew, 1760-1839
25
Historical Records Survey (Ohio)
25
Library of Congress. Manuscript Division
25
Rupp, I. Daniel 1803-1878
25
Stewart, Frank H., 1873-1948
25
more ...