| Letter, to Henry J. Van Lennep, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1866-02-14 |
| Letter, to the Committee ad Interim, from Henry J. Van Lennep | Amerikan Bord Heyeti (American Board) | 1866-08-04 |
| Letter, to Tillman C. Trowbridge, from Charles F. Morse | Amerikan Bord Heyeti (American Board) | 1866-03-20 |
| Letter, to the Committee ad Interim, from Daniel Ladd | Amerikan Bord Heyeti (American Board) | 1866-08-27 |
| Letter, to Charles F. Morse, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1866-04-08 |
 | Letter, to Tillman C. Trowbridge, from Sanford Richardson | Amerikan Bord Heyeti (American Board) | 1865-04-14 |
| Letter, to Committee ad Interim, from Jasper N. Ball | Amerikan Bord Heyeti (American Board) | 1865-10-23 |
| Letter, to the Committee ad Interim, from Daniel Ladd | Amerikan Bord Heyeti (American Board) | 1866-02-17 |
| Letter, to the Rufus Anderson, from Harrison G.O. Dwight (Mr. Clark's return to America) | Amerikan Bord Heyeti (American Board) | 1859-05-04 |
| Letter, to the Rufus Anderson, from Harrison G.O. Dwight (on funds for printing) | Amerikan Bord Heyeti (American Board) | 1858-07-09 |
