| Letter, to E.E. Strong, from Clara D. Lawrence | Amerikan Bord Heyeti (American Board) | 1907-05-22 |
 | Letter, to Joseph K. Greene, from Ernest C. Partridge | Amerikan Bord Heyeti (American Board) | 1907-03-01 |
| Letter, from H.J. Barnum to Mrs. H. B.Mombray | Amerikan Bord Heyeti (American Board) | 1907-02-19 |
 | Letter, to the Committee ad Interim, from Ernest C. Partridge | Amerikan Bord Heyeti (American Board) | 1907-01 |
| Letter, to James L. Barton, from Ernest C. Pye | Amerikan Bord Heyeti (American Board) | 1912-07-26 |
| Letter, to Judson Smith, from Ira F. Pettibone, William W. Peet | Amerikan Bord Heyeti (American Board) | 1887-12-20 |
| Letter, to N.G. Clark, from Harrison G.O. Dwight | Amerikan Bord Heyeti (American Board) | 1886-05-31 |
| Letter, to Dr. Clark's reply to letter of Aug. 13 on unexpended balances, from the Secretary, Western Turkey Mission | Amerikan Bord Heyeti (American Board) | 1879-09-20 |
| Letter, from Committee Ad Interim to Dr. Clark (Concerning Mr. Fowle and the request for a new man to Cesarea) | Amerikan Bord Heyeti (American Board) | 1878-08-16 |
| Letter, to N.G. Clark, from Harrison G.O. Dwight | Amerikan Bord Heyeti (American Board) | 1877-12-06 |
| Letter, to N.G. Clark, from Harrison G.O. Dwight | Amerikan Bord Heyeti (American Board) | 1876 |
| Letter, to N.G. Clark, from Benjamin Schneider | Amerikan Bord Heyeti (American Board) | 1874-05-26 |
| Letter, to Dr. Clark in Theological School at P., from Mr. Haskell (Copy of letter) | Amerikan Bord Heyeti (American Board) | 1869-01-08 |
| Letter, to N.G. Clark, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1866-03-27 |
| Letter, to Tillman C. Trowbridge, from Julius Y. Leonard | Amerikan Bord Heyeti (American Board) | 1863-09-23 |
| Letter, to the Rufus Anderson, from Oliver Crane | Amerikan Bord Heyeti (American Board) | 1862-09-10 |
| Letter, to the Rufus Anderson, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1862-03-17 |
| Letter, to the Rufus Anderson, from Edwin E. Bliss and George Washburn (reply to letter of Dr. Anderson date 1861 Nov 26) | Amerikan Bord Heyeti (American Board) | 1862-02-07 |
| Letter, to the Rufus Anderson, from Harrison G.O. Dwight and Edwin Bliss (reply to his letter of January 30/1860) | Amerikan Bord Heyeti (American Board) | 1860-03-24 |
| Letter, to the Rufus Anderson, from Tillman C. Trowbridge | Amerikan Bord Heyeti (American Board) | 1860-01-05 |