Other
- Carnegie Institution of Washington 1 results
- Learned, Marion Dexter, 1857-1917 1 results
- Library of Congress European Historical Mission.T 1 results
- Madison, James, 1751-1836 1 results
- McLaughlin, Andrew C. (Andrew Cunningham), 1861-1947 1 results
- Paullin, Charles Oscar, 1868 or 1869-1944 1 results
- Paxson, Frederic L. (Frederic Logan), 1877-1948 1 results
- Rutland, Robert Allen, 1922-2000 1 results
- Spain. Ministerio de Asuntos Exteriores 1 results
- United States. Congress 1 results
- United States. Department of State 1 results