| Letter, to Theodore A. Baldwin, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1877-05-29 |
| Letter, to Theodore A. Baldwin, from John H. House | Amerikan Bord Heyeti (American Board) | 1877-02-05 |
| Letter, to Theodore A. Baldwin, from Henry P. Page | Amerikan Bord Heyeti (American Board) | 1877-01-30 |
 | Letter, to Theodore A. Baldwin, from Charles Hutchins | Amerikan Bord Heyeti (American Board) | 1877-03-14 |
 | Letter, to Theodore A. Baldwin, from George C. Knapp | Amerikan Bord Heyeti (American Board) | 1877-03-21 |
| Letter, to J.M. Baldwin | Amerikan Bord Heyeti (American Board) | 1877-03-09 |
| Letter, to the delegates at the annual meeting of the Mission to Western Turkey, from Oliver Crane | Amerikan Bord Heyeti (American Board) | 1863-05-10 |
| Letter, to Ira F. Pettibonne, Tillman C. Trowbridge, from Herman N. Barnum | Amerikan Bord Heyeti (American Board) | 1863-04-04 |
| Letter, to the Committee ad Interim, Northern Armenian Mission, from Oliver W. Winchester | Amerikan Bord Heyeti (American Board) | 1860-08-21 |
| Letter, to Tillman C. Trowbridge, from Joseph K. Greene, on Annual Meeting | Amerikan Bord Heyeti (American Board) | 1864-01-23 |
