| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 1 |
 |
General Family Correspondence | 1908; 1909; 1910; 1911; 1912; 1913; 1914; 1915; 1916; 1917; 1918; 1919; 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929; 1930 | Text | dha_ersp |
| 2 |
 |
Oral history interview of John Challis, conducted by William Challis (transcript) | 2021-10-15 | Text | uum_uc19 |
| 3 |
 |
Oral history interview of John Challis, conducted by William Challis (video) | 2021-10-15 | Image/MovingImage | uum_uc19 |