| Letter, from Daniel Ladd to E. Riggs | Amerikan Bord Heyeti (American Board) | 1854-12-14 |
| Letter, from Henry J. Van Lennep | Amerikan Bord Heyeti (American Board) | 1855-02-19 |
| Letter, to the Committee ad Interim, from Jasper N. Ball and Wilson A. Farnsworth | Amerikan Bord Heyeti (American Board) | 1856-01-29 |
| Letter, to the Committee ad Interim, Harrison G.O. Dwight, from Daniel Ladd | Amerikan Bord Heyeti (American Board) | 1856-01-04 |
| Letter, to the Committee ad Interim, from Henry J. Van Lennep | Amerikan Bord Heyeti (American Board) | 1855-12-18 |
| Letter, to Harrison G.O. Dwight, from Josiah Peabody | Amerikan Bord Heyeti (American Board) | 1856-04-01 |
| Circular letter, The seventh circular to the friends of the Pilgrim-Mission | Amerikan Bord Heyeti (American Board) | 1855-12 |
| Letter, to Harrison G.O. Dwight, from Edwin E. Bliss | Amerikan Bord Heyeti (American Board) | 1856-12-26 |
| Letter, to Harrison G.O. Dwight, from Benjamin Parsons | Amerikan Bord Heyeti (American Board) | 1857-01-19 |
| Letter, to Harrison G.O. Dwight, from Benjamin Parsons | Amerikan Bord Heyeti (American Board) | 1856-12-02 |
