| Letter, to the Rufus Anderson, from E. Riggs (in regard to the return of the Peabody) | Amerikan Bord Heyeti (American Board) | 1859-11-28 |
| Letter, to the Rufus Anderson, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1857-12-24 |
| Letter, to the Rufus Anderson, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1862-01-08 |
| Letter, to the Rufus Anderson, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1862-04-29 |
| Letter, to the Rufus Anderson, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1859-06-29 |
| Letter, to the Rufus Anderson, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1857-09-20 |
| Letter, to S.B. Treat, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1863-07-21 |
 | Letter, to the Western Turkey Mission Committee ad Interim, from Ohannes G. Telfeyan, Aridis Natcashian, Diran S. Mardiguian, Nishan Hauteassian | Amerikan Bord Heyeti (American Board) | 1908-09-23 |
| Letter, to Judson Smith, from Charles T. Riggs, Joseph K. Greene | Amerikan Bord Heyeti (American Board) | 1904-05-26 |
| Letter, to Judson Smith, from Edwin E. Bliss (Pera Church building) | Amerikan Bord Heyeti (American Board) | 1889-06-17 |
