| Joseph K. Greene | A.N. Hardy Photographer, 22 Winter Street, Boston | - |
| Journal of Emma Riggs | Amerikan Bord Heyeti (American Board) | 1862-11-01; 1863-06-16 |
| L. S. Trowbridge | TM Schleier's Fine Art Gallery, Knoxville, East Tenn. | - |
| Letter sent by [J.E. Pierce] from London to the American Board in Constantinople on his journey to Constantinople | Amerikan Bord Heyeti (American Board) | 1878-09-24 |
| Letter to George Washburn | Amerikan Bord Heyeti (American Board) | 1859-03-05 |
| Letter to George Washburn | Amerikan Bord Heyeti (American Board) | 1859-03-02 |
| Letter, to Charles T. Riggs, from ? | Amerikan Bord Heyeti (American Board) | 1911-02-06 |
| Letter, to Charles T. Riggs, from A.R. Hoover | Amerikan Bord Heyeti (American Board) | 1911-02 |
 | Letter, to Charles T. Riggs, from Edward F. Carey | Amerikan Bord Heyeti (American Board) | 1912-05-08 |
 | Letter, to Charles T. Riggs, from Fred F. Goodsell | Amerikan Bord Heyeti (American Board) | 1912-01-16 |
| Letter, to Charles T. Riggs, from H. T. Perry | Amerikan Bord Heyeti (American Board) | 1910-10-24 |
 | Letter, to Charles T. Riggs, from H. T. Perry | Amerikan Bord Heyeti (American Board) | 1910-10-31 |
| Letter, to Charles T. Riggs, from Henry K. Wingate | Amerikan Bord Heyeti (American Board) | 1911-04-03 |
 | Letter, to Charles T. Riggs, from Lyndon S. Crawford | Amerikan Bord Heyeti (American Board) | 1913-05-10 |
| Letter, to Charles T. Riggs, from Ralph S. Harlow | Amerikan Bord Heyeti (American Board) | 1912-07-10 |
 | Letter, to Charles T. Riggs, from S.W. Gentle Cackett | Amerikan Bord Heyeti (American Board) | 1912-04-29 |
 | Letter, to Charles T. Riggs, from Theodore A.Elmer | Amerikan Bord Heyeti (American Board) | 1911-11-11 |
 | Letter, to Henry Hill, from Charles Ede | Amerikan Bord Heyeti (American Board) | 1839-08-17 |
| Letter, to Joseph K. Greene, from Lyndon S. Crawford | Amerikan Bord Heyeti (American Board) | 1910-05-26 |
| Letter, to Mabel E. Emerson, Boston (Mass.) | Amerikan Bord Heyeti (American Board) | 1936-04-10 |
