Other
- Library of Congress 29 results
- Historical Society of Pennsylvania 27 results
- Virginia State Library 19 results
- Historical Records Survey (U.S.) 13 results
- Pennsylvania Historical and Museum Commission 12 results
- Library Company of Philadelphia 11 results
- Schweitzer, George Keene, 1924- 11 results
- United States. National Archives and Records Administration 11 results
- National Archives (U.S.) 10 results
- United States. Work Projects Administration. Division of Community Service Programs 9 results
- William L. Clements Library 8 results
- Beers, Henry Putney, 1907- 7 results
- Gibson, Jeremy Sumner Wycherley 7 results
- Hasse, Adelaide R. (Adelaide Rosalia), 1868-1953 7 results
- Library of Congress. Map Division 7 results
- New England Historic Genealogical Society 7 results
- New York Public Library 7 results
- Bowker, R. R. (Richard Rogers), 1848-1933 6 results
- Ethnic Heritage Studies Program (U.S.) 6 results
- Ford, Paul Leicester, 1865-1902 6 results
- John Carter Brown Library 6 results
- Library of Congress. Geography and Map Division 6 results
- Pennsylvania Historical Commission 6 results
- Phillips, Philip Lee, 1857-1924 6 results
- Rath, Frederick L. 6 results
- Sabin, Joseph, 1821-1881 6 results
- Balch Institute for Ethnic Studies 5 results
- Boston Public Library 5 results
- Crumrine, Boyd, 1838-1916 5 results
- Griffin, Appleton P. C. (Appleton Prentiss Clark), 1852-1926 5 results
- Historical Records Survey (Me.) 5 results
- Hoenstine, Floyd G. 5 results
- Hoglund, A. William 5 results
- Kirkham, E. Kay 5 results
- Library of Congress. Music Division 5 results
- Newberry Library 5 results
- O'Connell, Merrilyn Rogers 5 results
- Sinclair, Donald A. 5 results
- State Historical Society of Wisconsin 5 results
- Stevens, Henry, Jr., 1819-1886 5 results
- Survey of Federal Archives (U.S.) Pennsylvania 5 results
- United States. National Historical Publications Commission 5 results
- University of Pennsylvania. Library 5 results
- Wroth, Lawrence C. (Lawrence Counselman), 1884-1970 5 results
- American Association for State and Local History 4 results
- American Historical Association 4 results
- American Philosophical Society 4 results
- Arndt, Karl John Richard 4 results
- Association of American Railroads 4 results
- Boston Athenaeum 4 results more…