| Letter, to Edwin E. Bliss, from Herman N. Barnum | Amerikan Bord Heyeti (American Board) | 1863-08-28 |
| Letter, to Oliver W. Winchester and Henry J. Van Lennep in regard to the property of the Board at Tocat (Turkey) | Amerikan Bord Heyeti (American Board) | 1864-08-25 |
| Letter, to Tillman C. Trowbridge, from Henry J. Van Lennep | Amerikan Bord Heyeti (American Board) | 1864-06-18 |
| Letter, to J. Holdich, Secretary of the American Bible Society (New York, N.Y.), from C.F. Morse and Julius Y. Leonard | Amerikan Bord Heyeti (American Board) | 1864-06-02 |
| Letter, to Dr. Goodell, from C. R. Gibble | Amerikan Bord Heyeti (American Board) | 1864-05-11 |
| Letter, to Tillman C. Trowbridge, from Daniel Ladd, on Annual Meeting | Amerikan Bord Heyeti (American Board) | 1864-01-29 |
| Letter, to Wilson A. Farnsworth, Alvin B. Goodale, Julius Y. Leonard at Cesarea, from J. Holdich | Amerikan Bord Heyeti (American Board) | 1863-09-26 |
| Letter, to the Committee ad Interim, from Charles F. Morse | Amerikan Bord Heyeti (American Board) | 1863-06-22 |
| Letter, to the Brethren of the Eastern Mission, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1863-04-28 |
| Letter, to R. Anderson, from George W. Dunmore | Amerikan Bord Heyeti (American Board) | 1861-06-15 |
| Letter, to the Committee ad Interim, from H. B. Matteosian | Amerikan Bord Heyeti (American Board) | 1861-02-22 |
| Letter, regarding application to the Committee ad Interim, to Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1860 |
| Letter, to the Committee ad Interim, Northern Armenian Mission, from Oliver Crane | Amerikan Bord Heyeti (American Board) | 1860-12-20 |
| Letter, to the Members of the Constantinople Station, from William G. Schauffler | Amerikan Bord Heyeti (American Board) | 1860-11-30 |
| Letter, to the Committee ad Interim, from Jasper N. Ball | Amerikan Bord Heyeti (American Board) | 1860-08-09 |
| Letter, to the Committee ad Interim, from Charles F. Morse | Amerikan Bord Heyeti (American Board) | 1860-08-02 |
| Letter, to the Committee ad Interim, Northern Armenian Mission, from Oliver W. Winchester | Amerikan Bord Heyeti (American Board) | 1860-07-10 |
| Letter, to the Members of the Northern Armenian Mission assembled in Kharpoot, from David H. Nutting | Amerikan Bord Heyeti (American Board) | 1860-05-21 |
| Letter, to Secretary, of the American Tract Society (Boston, Mass.), from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1859-09-16 |
| Letter, to the Committee ad Interim of the Northern Armenian Mission, from George W. Dunmore | Amerikan Bord Heyeti (American Board) | 1859-07-25 |