| RefNo | Title |
| DF/ENT/335/4/28 | Clay, Theresa Rachel: Correspondence, Mouchet, Jean (Cameroun) |
| DF/ENT/335/4/30 | Clay, Theresa Rachel: Correspondence, Phillips, W W A (Ceylon and England) |
| DF/ENT/335/4/2 | Correspondence G - M |
| DF/ENT/335/4/9 | Clay, Theresa Rachel: Correspondence, D - K |
| DF/ENT/340/26/16 | British Museum (Clay, Theresa Rachel) |
| DF/ENT/311/37 | Clay, T: Entomology of Antarctica (1967) |
| DF/ENT/335/4/50 | Correspondence and Papers of T R Clay: Notes on genera of the Phthiraptera, arranged alphabetically |
| DF/ENT/335/4/21 | Clay, Theresa Rachel: Correspondence, Emerson, Kary Casey (USA) |
| DF/ENT/340/4/5 | Clay - Cluff |
| DF/ENT/335/4/4 | Correspondence W - Z |
| DF/ENT/335/4/1 | Correspondence A - F |
| DF/ENT/335/4/52 | Clay, Theresa Rachel: Myrsidea: photographs |
| DF/ENT/335/4/42 | Clay, Theresa Rachel: Quadraceps |
| DF/ENT/335/4/7 | Clay, Theresa Rachel: Correspondence, M - Z |
| DF/ENT/335/4/55 | Clay, Theresa Rachel: Photographs of genera of the Phthiraptera, Q - Z |
| DF/ENT/335/4/43 | Clay, Theresa Rachel: Trigionophthalmus: correspondence and notes |
| DF/ENT/335/4/51 | Clay, Theresa Rachel: Myrsidea: notes and drawings |
| DF/ENT/335/4/40 | Clay, Theresa Rachel: Correspondence, Werneck, Fabio Leoni (Rio de Janeiro, Brazil) |
| DF/ENT/335/4/48 | Clay, Theresa Rachel: Menoponids: notes and drawings |
| DF/ENT/335/4/53 | Clay, Theresa Rachel: Photographs of genera of the Phthiraptera, A - C |
| DF/ENT/335/4/8 | Clay, Theresa Rachel: Correspondence, A - C |
| DF/ENT/335/4/18 | Clay, Theresa Rachel: Correspondence, Edwards, Robert L (Harvard, Massachusetts, USA) |
| DF/ENT/311/34 | Clay, T: Contributions towards a revision of Myrsidea Waterston I (Menoponidae:Mallophaga) |
| DF/ENT/335/4/6 | Clay, Theresa Rachel: Correspondence, C - L |
| DF/ENT/335/4/19 | Clay, Theresa Rachel: Correspondence, Eichler, Witold (Leipzig and Kleinmachnow, Germany) |
| DF/ENT/335/4/3 | Correspondence N - V |
| DF/ENT/335/4/29 | Clay, Theresa Rachel: Correspondence, Murray, M D (CSIRO, Sydney, Australia) |
| DF/ENT/335/4/25 | Clay, Theresa Rachel: Correspondence, Hopkins, G H E (Kampala, Uganda) |
| DF/ENT/335/4/34 | Clay, Theresa Rachel: Correspondence, Tandan, Bhup K (Lucknow, India) |
| DF/ENT/335/4/32 | Clay, Theresa Rachel: Correspondence, Price, Roger D (Minnesota, USA) |
| DF/ENT/335/4/35 | Clay, Theresa Rachel: Correspondence, Tandan, Bhup K (Lucknow, India) |
| DF/ENT/335/4/26 | Clay, Theresa Rachel: Correspondence, Johannesburg, South Africa: South African Institute for Medical Research (F Zumpt and H E Paterson) |
| DF/ENT/335/4/47 | Clay, Theresa Rachel: On the collection of lice (Boopidae) parasitic on rock wallabies: notes and correspondence with Dr M Durno Murray and others |
| DF/ENT/311/182 | Tandan, B K: Revision of Myrsidea (part VI) by B K Tandan and T Clay (1972) |
| DF/ENT/311/32 | Clay, T: The early literature on Mallophaga, parts II-IV by T Clay and G H E Hopkins |
| DF/ENT/335/4/17 | Clay, Theresa Rachel: Correspondence, Carriker, Melbourne A (Popayan, Columbia) |
| DF/ENT/335/4/13 | Clay, Theresa Rachel: Correspondence, Balat, Frantisek (Brno, Czechoslovakia) |
| DF/ENT/335/4/10 | Clay, Theresa Rachel: Correspondence, L - P |
| DF/ENT/335/4/11 | Clay, Theresa Rachel: Correspondence, R - Z |
| DF/ENT/335/4/27 | Clay, Theresa Rachel: Correspondence, Keler, Stephen von (Berlin, Germany) |
| DF/ENT/311/38 | Clay, T: Drawings of Mallophaga |
| DF/ENT/335/4/44 | Clay, Theresa Rachel: Revision of Actornithophilus: correspondence and papers |
| DF/ENT/311/35 | Clay, T: New Mallophaga by T Clay and R D Price |
| DF/ENT/335/4/39 | Clay, Theresa Rachel: Correspondence, Ward, Ronald A (Chicago and Washington, USA) |
| DF/ENT/335/4/31 | Clay, Theresa Rachel: Correspondence, Price, Roger D (Minnesota, USA) |
| DF/ENT/335/4/45 | Clay, Theresa Rachel: On Haematomyzus parasitic on the warthog: correspondence, notes and draft of a paper written with Dr W Plowright |
| DF/ENT/335/4/46 | Clay, Theresa Rachel: Key to the genera and generic groups of the Ischnocera |
| DF/ENT/335/4/23 | Clay, Theresa Rachel: Correspondence, Emerson, Kary Casey (Virginia, USA) |
| DF/ENT/307/8 | Clay, Miss Theresa R |
| DF/ENT/335/4/12 | Clay, Theresa Rachel: Correspondence, Ansari, M Atiqur Rahman (Lahore, Pakistan) |
| DF/ENT/335/4/37 | Clay, Theresa Rachel: Correspondence, Timmerman, Gunter (Iceland and Hamburg, Germany) |
| DF/ENT/335/4/38 | Clay, Theresa Rachel: Correspondence, Timmerman, Gunter (Iceland and Hamburg, Germany) |
| DF/ENT/335/3/36 | Correspondence with Madge, David S (Rothamsted, England) |
| DF/ENT/335/4/54 | Clay, Theresa Rachel: Photographs of genera of the Phthiraptera, D - P |
| DF/ENT/335/4/22 | Clay, Theresa Rachel: Correspondence, Emerson, Kary Casey (Virginia, USA) |
| DF/ENT/335/4/14 | Clay, Theresa Rachel: Correspondence, Belgian Congo (Museums and National Parks) |
| DF/ENT/335/4/15 | Clay, Theresa Rachel: Correspondence, Brink, P (Lund, Sweden) |
| DF/ENT/335/4/36 | Clay, Theresa Rachel: Correspondence, Tendeiro, Joao (Portugal and Mozambique) |
| DF/ENT/311/33 | Clay, T: Contributions towards a revision of Myrsidea Waterston (Mallophaga:Menoponidae) II |
| DF/ENT/335/4/41 | Clay, Theresa Rachel: On species of Philopterus parasitic on Corvidae: notes |
| DF/ENT/335/4/33 | Clay, Theresa Rachel: Correspondence, Symmons, Saida (Aberdeen, Scotland) |
| DF/ENT/335/4/49 | Clay, Theresa Rachel: Species of Saemundssonia parasitic on the Charadriiformes: notes |
| DF/ENT/335/4/5 | Clay, Theresa Rachel: Correspondence, A - C |
| DF/ENT/335/3/35 | Correspondence with Greenslade, P J M (Adelaide, Australia) |
| DF/ENT/335/4 | Clay, Theresa Rachel: Correspondence and Papers |
| DF/ENT/311/201 | Clay, T: A revision of the general and species of Mallophaga occurring on Gallinaceous hosts |
| DF/ENT/340/1/5 | Allison, Frederick Richard |
| DF/ENT/335/4/16 | Clay, Theresa Rachel: Correspondence, Buttiker, W (Basel, Switzerland) |
| DF/ENT/335/4/24 | Clay, Theresa Rachel: Correspondence, Hazelwood, Alfred (Bolton, England) |
| DF/ENT/335/6 | Odonata and Neuropteroid Sectional Correspondence |
| DF/ENT/311/36 | Clay, T: Various papers by T Clay, G H E Hopkins and G A H Bedford |
| DF/ZOO/232/12/3/34 | Hayman, Robert William: Correspondence, 1955, C |