| Circular letter, on Dr. Jewett's removal to Cesarea | Amerikan Bord Heyeti (American Board) | 1855 |
| Document, Thomas Davidson Christie (1843-1921), from Fred Field Goodsell | Amerikan Bord Heyeti (American Board) | 1921 |
| Letter sent by [J.E. Pierce] from London to the American Board in Constantinople on his journey to Constantinople | Amerikan Bord Heyeti (American Board) | 1878-09-24 |
| Letter to the Protestant Armenian Church, from Tillman C. Trowbridge, William G. Schauffler, Theodore A. Baldwin | Amerikan Bord Heyeti (American Board) | 1868-05-26 |
 | Letter, from Justin W. Parsons | Amerikan Bord Heyeti (American Board) | 1862 |
 | Letter, regarding application to the Committee ad Interim, to Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1860 |
 | Letter, to Charles T. Riggs, from A.R. Hoover | Amerikan Bord Heyeti (American Board) | 1912-07-22 |
 | Letter, to Charles T. Riggs, from A.T. Daghlian, Anatolia College | Amerikan Bord Heyeti (American Board) | 1912-05-01 |
| Letter, to Charles T. Riggs, from Arthur C. Ryan | Amerikan Bord Heyeti (American Board) | 1911-05-15 |
 | Letter, to Charles T. Riggs, from Arthur C. Ryan | Amerikan Bord Heyeti (American Board) | 1912-07-13 |
 | Letter, to Charles T. Riggs, from Charles C. Tracy, Anatolia College | Amerikan Bord Heyeti (American Board) | 1912-05-22 |
 | Letter, to Charles T. Riggs, from Charles K. Tracy | Amerikan Bord Heyeti (American Board) | 1912-07-26 |
 | Letter, to Charles T. Riggs, from Charles K. Tracy | Amerikan Bord Heyeti (American Board) | 1911-11-22 |
| Letter, to Charles T. Riggs, from Charlette R. Willard | Amerikan Bord Heyeti (American Board) | 1913-01-25 |
| Letter, to Charles T. Riggs, from Dana K. Getchell | Amerikan Bord Heyeti (American Board) | 1911-05-19 |
 | Letter, to Charles T. Riggs, from Emily M. McCallum | Amerikan Bord Heyeti (American Board) | 1912-06-14 |
 | Letter, to Charles T. Riggs, from Ernest Pye | Amerikan Bord Heyeti (American Board) | 1913-01-30 |
 | Letter, to Charles T. Riggs, from F. M. Stead | Amerikan Bord Heyeti (American Board) | 1912-12-19 |
 | Letter, to Charles T. Riggs, from George E. White | Amerikan Bord Heyeti (American Board) | 1911-05-17 |
| Letter, to Charles T. Riggs, from Henry K. Wingate | Amerikan Bord Heyeti (American Board) | 1911-04-03 |
