| Letter, Stepan Khach. | Amerikan Bord Heyeti (American Board) | 1854-12-13 |
| Documents relating to Armenian Evangelical Church of Langa; the conference; Rodosto school English and Armenian | Amerikan Bord Heyeti (American Board) | 1906; 1909 |
| Letter, Garabed Datarian of Adrianople writes that he is new on good terms with another brother of the place | Amerikan Bord Heyeti (American Board) | 1889-11-14 |
| Letter to members of Constantinople Station, from Yeprem Çolakyan, J. Kalaygian, R. E. Sarofian | Amerikan Bord Heyeti (American Board) | 1910-02-15 |
| Letter, William W. Peet, S.S. Dingvelian, Evangelical Armenian Church | Amerikan Bord Heyeti (American Board) | 1913-06 |
| Letter to the Constantinople Station, from the Evangelical church in Marsovan on the Bliss removal | Amerikan Bord Heyeti (American Board) | 1855-12-11 |
| Letter to E. Bliss, from Nicomedia church, 14 members of the Nicomedia church | Amerikan Bord Heyeti (American Board) | 1855-05-19 |
| Letter, Pera and Hasskeuy church, support of pastor | Amerikan Bord Heyeti (American Board) | 1855-03-03 |
| Letter, church in Broosa, salary of teacher | Amerikan Bord Heyeti (American Board) | 1854-04-05 |
| Letter regarding session of Adabazar church | Amerikan Bord Heyeti (American Board) | 1854-03-16 |
