| Letter, to Theodore A. Baldwin, from Hill & Heath | Amerikan Bord Heyeti (American Board) | 1877-06-12 |
 | Letter, to Theodore A. Baldwin | Amerikan Bord Heyeti (American Board) | 1877-06-26 |
| Letter, to C.R. Gibble, Chaplain of the British Embassy from? Elias Riggs, William G.Schauffler, Dr. Goodell | Amerikan Bord Heyeti (American Board) | 1864-05-25 |
| Letter, to Tillman C. Trowbridge, from Theodore L. Byington | Amerikan Bord Heyeti (American Board) | 1864-05-17 |
| Letter, to Tillman C. Trowbridge, from Henry J. Van Lennep | Amerikan Bord Heyeti (American Board) | 1864-10-14 |
| Letter, to all the Brethren of the American Mission at Constantinople | Amerikan Bord Heyeti (American Board) | 1863-05-06 |
| Letter, to Tillman C. Trowbridge, from Herman N. Barnum | Amerikan Bord Heyeti (American Board) | 1864-04-28 |
| Letter, to Henry J. Van Lennep, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1864-04-14 |
| Letter, to Tillman C. Trowbridge, from Herman N. Barnum | Amerikan Bord Heyeti (American Board) | 1864-05-07 |
| Letter, to E. Riggs, from British Foreign Bible Society | Amerikan Bord Heyeti (American Board) | 1864-07-06 |
