| RefNo | Title | Source |
| DF/ZOO/200/143/43 | Trechmann Bequest | |
| DF/ADM/1004/717 | C O and Dr C T Trechmann: bequests of geological specimens and books | |
| DF/PAL/150/2 | Trechmann, Charles Taylor: Correspondence | |
| DF/PAL/100/214/7 | Trechmann, C T | |
| DF/PAL/100/214/5 | Trechmann, C T | |
| DF/MIN/1/50/18 | Trechmann, C T | |
| DF/ZOO/200/140/43 | Trechmann, Charles Taylor Bequest | |
| DF/PAL/122/1/7 | Newton, Richard Bullen: correspondence | |
| DF/PAL/122/1/6 | Newton, Richard Bullen: correspondence | |
| DF/PAL/107 | Keeper of Palaeontology's Subject Files | |
| DF/PAL/122/1/3 | Newton, Richard Bullen: correspondence | |
| DF/PAL/100/214/6 | Trechmann, C T | |
| DF/PAL/100/60/277 | Trechmann, C T | |
| DF/PAL/100/60/278 | Trechmann, C T | |
| DF/PAL/100/62/166 | Trechmann, C T | |
| DF/PAL/107/17 | C T Trechmann bequest | |
| DF/PAL/141/150 | Trechmann, C T: collection acquisition | |
| DF/PAL/141/51 | Tibetan skull bowl, C T Trechmann | |
| DF/PAL/141/32 | F Corner collection of skulls, C T Trechmann | |
| DF/ZOO/254/4/35 | Mollusca Section Subject File: Charles Taylor Trechmann collection | |