| Letter, to Dr. Clark, from H.C. Haskell, L. Bond, H.P. Page, W. Edwin Locke | Amerikan Bord Heyeti (American Board) | 1870-12-14 |
| Letter, to Theodore A. Baldwin, from William G. Schauffler | Amerikan Bord Heyeti (American Board) | 1877-01-20 |
| Letter, to M. Jane Gleason, from Azmi Narootunian | Amerikan Bord Heyeti (American Board) | 1871 |
| Letter, to G.V.C. Merriam, from Charles Hutchins | Amerikan Bord Heyeti (American Board) | 1876-12-06 |
 | Letter, to R.A. Baldwin, from Daniel M.B. Thom | Amerikan Bord Heyeti (American Board) | 1876-07-03 |
| Letter, to Theodore A. Baldwin, from J.E. Scott | Amerikan Bord Heyeti (American Board) | 1877-01-22 |
| Letter, to Ira F. Pettibone, from A. Hallock | Amerikan Bord Heyeti (American Board) | 1870-04-13 |
 | Letter, to R.A. Baldwin, from E.F. Mattbie | Amerikan Bord Heyeti (American Board) | 1876-08-02 |
| Letter, to R.A. Baldwin, from Ann Marston | Amerikan Bord Heyeti (American Board) | 1876-09-27 |
| Letter, to Theodore A. Baldwin, from Julius Y. Leonard | Amerikan Bord Heyeti (American Board) | 1878-08-16 |
