| Letter, to the Secretary American Tract Society, New York, from Justin W. Parsons, Edwin E. Bliss and Benjamin Schneider | Amerikan Bord Heyeti (American Board) | 1870-05-27 |
| Letter, to Secretary of the American Bible Society, from Justin W. Parsons, Giles F. Montgomery and Wilson A. Farnsworth | Amerikan Bord Heyeti (American Board) | 1871-06-09 |
| Letter, to Secretary of London Tract Society, from Theodore A. Baldwin, Ira F. Pettibone and Edward E. Bliss | Amerikan Bord Heyeti (American Board) | 1873-05-17 |
| Letter, to the Secretary American Bible Society, New York, from P. O. Powers and Milan H. Hitchcock | Amerikan Bord Heyeti (American Board) | 1870-05-27 |
 | Letter, to Brothers re records of the convention of Missionaries in the Bulgarian work, by H.C.Page | Amerikan Bord Heyeti (American Board) | 1870-03-14 |
| Letter, to Secretary American Tract Society, New York, from George W. Wood, Edwin E. Bliss and Milan H. Hitchcock | Amerikan Bord Heyeti (American Board) | 1875-05-25 |
| Letter, to N.G. Clark, from Harrison G.O. Dwight (letter on Consular agencies to Mission House) | Amerikan Bord Heyeti (American Board) | 1876-02-18 |
| Letter, to N.G. Clark, from Harrison G.O. Dwight | Amerikan Bord Heyeti (American Board) | 1876-02-29 |
| Letter, to N.G. Clark | Amerikan Bord Heyeti (American Board) | 1876-10-17 |
| Letter, to Theodore A. Baldwin, from James F. Clarke | Amerikan Bord Heyeti (American Board) | 1877-12-03 |
