| Elias Riggs's sermon notes | Amerikan Bord Heyeti (American Board) | - |
| Elias Riggs's sermon notes | Amerikan Bord Heyeti (American Board) | - |
| Elizabeth Riggs' Journal | Amerikan Bord Heyeti (American Board) | 1848-03-11; 1856-03-10 |
| Elizabeth Riggs' Journal (Smyrna, 1851) | Amerikan Bord Heyeti (American Board) | 1851-03-11; 1852-10-06 |
| Envelope, N.E.R. file, 1920-1921 | Amerikan Bord Heyeti (American Board) | 1920; 1921 |
| Girls' Boarding School. Theological Seminary | Amerikan Bord Heyeti (American Board) | - |
| Istanbul (1944-1946) | Amerikan Bord Heyeti (American Board) | 1944-05-03; 1946 |
| Journal of Emma Riggs | Amerikan Bord Heyeti (American Board) | 1862-11-01; 1863-06-16 |
| Letter to George Washburn | Amerikan Bord Heyeti (American Board) | 1859-03-05 |
| Letter to George Washburn | Amerikan Bord Heyeti (American Board) | 1864-11-05 |
| Letter to George Washburn | Amerikan Bord Heyeti (American Board) | 1859-03-02 |
| Letter to Pettibone | Amerikan Bord Heyeti (American Board) | 1869-08-04 |
| Letter to Rev. E. M. Dodd | Amerikan Bord Heyeti (American Board) | 1864-03-19 |
| Letters Packet 1 | Amerikan Bord Heyeti (American Board) | 1858-11-29; 1860-05-25 |
| Letters Packet 2 - Sermons of Elias Riggs | Amerikan Bord Heyeti (American Board) | 1890-02-18; 1895-06-27 |
| Letters Packet 3: Goodell Correspondence | Amerikan Bord Heyeti (American Board) | 1843; 1869 |
| Letters Packet 4 | Amerikan Bord Heyeti (American Board) | 1859; 1886 |
| Letters Packet 5: Emma's death | Amerikan Bord Heyeti (American Board) | 1862; 1863 |
| Letters Packet 6: Samuel's death | Amerikan Bord Heyeti (American Board) | 1843; 1845 |
| Letters Packet 7 (a): Edward & Elias's deaths | Amerikan Bord Heyeti (American Board) | 1869; 1913 |
