| Letter, to Charles T. Riggs, from Mary C. Fowle | Amerikan Bord Heyeti (American Board) | 1911-08-23 |
| Letter, to William Goodell, from Henry Hill | Amerikan Bord Heyeti (American Board) | 1832-06-19 |
| Letter, to William Goodell, from Henry Hill | Amerikan Bord Heyeti (American Board) | 1836-05-06 |
| Near East Mission in Turkey Annual Station Reports, 1931-1937: Annual Meeting Near East Mission | Lyman, J.K. | 1936-06 |
 | Letter, to Charles T. Riggs, from James P. McNaughton | Amerikan Bord Heyeti (American Board) | 1913-02-26 |
 | Letter, to Charles T. Riggs, from Lyndon S. Crawford | Amerikan Bord Heyeti (American Board) | 1913-02-22 |
| Letter, to William Goodell, from Henry Hill | Amerikan Bord Heyeti (American Board) | 1836-04-25 |
| Letter, to William Goodell, from Henry Hill | Amerikan Bord Heyeti (American Board) | 1832-04-25 |
| Letter, to William Goodell, from Henry Hill | Amerikan Bord Heyeti (American Board) | 1843-07-29 |
| Near East Mission in Turkey Annual Station Reports, 1931-1937: Field Work Report Syria Station | Riggs, Henry H. | - |
