Author
Historical Society of Pennsylvania
118
Pennsylvania Historical and Museum Commission
111
Frederic R. Kirkland Collection
106
Newcomen Society of the United States
90
Jones, Richard S.
69
Archives of Czechs and Slovaks Abroad
67
United States. Work Projects Administration. Division of Professional and Service Projects
64
Pennsylvania. Comptroller-General's Office
58
United States. Work Projects Administration. Division of Community Service Programs
52
American Imprint Collection (Library of Congress)
46
New Jersey Historical Commission
42
New Jersey Historical Society
42
Washington, George, 1732-1799
42
United States. Department of State
39
Library of Congress. Congressional Research Service
36
Cunningham, John T.
35
Great Britain. Public Record Office
35
Institute of Early American History and Culture (Williamsburg, Va.)
35
Library of Congress Congressional Research Service
34
Lossing, Benson J. 1813-1891
34
New Jersey Historical Records Survey Project
34
New-York Historical Society
34
Newcomen Society in North America
34
Time-Life Books
34
Vermont Historical Records Survey
33
George de Benneville Keim Memorial Collection
32
Egle, William Henry, 1830-1901
31
Penn, William, 1644-1718
31
United States. Works Progress Administration. Division of Women's and Professional Projects
31
Historical Records Survey (U.S.) Ohio
29
Maryland Historical Society
29
Page, William, 1861-1934
29
New Jersey Tercentenary Commission
28
Elise Willing Balch Collection
27
Paine, Thomas, 1737-1809
27
Library of Congress
26
Carey, Mathew, 1760-1839
25
Historical Records Survey (Ohio)
25
Lebanon County Historical Society (Pa.)
25
Library of Congress. Manuscript Division
25
Pennsylvania Historical Commission
25
Abbott, Jacob, 1803-1879
24
Kent, Donald H.
24
Maryland State Archives
24
Stewart, Frank H., 1873-1948
24
United States. Federal Highway Administration
24
Catholic Record Society (Great Britain)
23
McMurtrie, Douglas C. 1888-1944
23
Sons of the Revolution. Pennsylvania Society
23
State Historical Society of Wisconsin
23
more ...