Other
- American Historical Association 1 results
- Arnold, Lee, 1959- 1 results
- George Washington University. Center for Washington Area Studies 1 results
- Hart, Albert Bushnell, 1854-1943 1 results
- National Council for the Social Studies 1 results
- Pennsylvania Historical and Museum Commission 1 results
- Pennsylvania. Department of Education 1 results
- Phi Delta Kappa 1 results
- Robinson, Donald Wittmer, 1911- 1 results
- Ulrich, Robert James 1 results