| Letter, to Brother, Western Turkey Mission, from William F. English | Amerikan Bord Heyeti (American Board) | 1892 |
| Letter, to Ira F. Pettibone, from William F. English | Amerikan Bord Heyeti (American Board) | 1891-07-15 |
| Letter, to Committee ad Interim, from George F. Herrick | Amerikan Bord Heyeti (American Board) | 1895-08-12 |
 | Letter, to Ira F. Pettibone, from Theodore A. Baldwin | Amerikan Bord Heyeti (American Board) | 1892-02-01 |
| Letter, to Luther R. Fowle, from Mabel E. Emerson | Amerikan Bord Heyeti (American Board) | 1936-01-15 |
 | Letter, to Elvesta T. Leslie, from Mabel E. Emerson | Amerikan Bord Heyeti (American Board) | 1936-05-05 |
| Letter, to father, from Lee Vrooman | Amerikan Bord Heyeti (American Board) | - |
 | Letter, testimony from Tarsus Turks that Paul Nilson gave assistance to individual Turks and the Red crescent during the French occupation | Amerikan Bord Heyeti (American Board) | 1924-29-11 |
| Letter, to Pfizer (Ortaköy, Istanbul, Turkey), from Altan Zeki Ünver (Social Service Coordinator) | Amerikan Bord Heyeti (American Board) | 1966-05-09 |
| Letter, to Lucius O. Lee, Secretary, Marash (Turkey), from Judson Smith, Boston (Mass.) | Amerikan Bord Heyeti (American Board) | 1892-11-02 |
