| Halil Schériff Pacha (Halil Şerif Paşa) | Abdullah Frères Photographes de S.M.I le Sultan, Constantinople | - |
| Harry H. Barnum | Sébah and Joaillier Photographes de la cour royale de prusse, Constantinople, 439 Grand Rue de Péra | - |
| Helen Cornelia Dwight | Osw. Welti, 12 rue Grand Chêne 12, Lausanne, Switzerland | - |
| Herman N. Barnum | Abdullah Freres Photographes de Sa Majesté Impériale le Sultan, Constantinople | - |
| International Missionary Union Meeting, Clifton Springs, New York | - | 1898 |
| Isabel Porter Dwight | Sébah and Joaillier Photographes de la cour royale de prusse, Constantinople, 439 Grand Rue de Péra | - |
| Isabella Dwight | Abdullah Frères Photographes de S.M.I. le Sultan, Constantinople | - |
| 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 |
