| RefNo | Title |
| DF/ENT/335/3/13 | Collecting in the Burren, Ireland |
| DF/ENT/335/3/19 | Royal Society Solomon Islands Expedition: collecting notebook 'Funnel 1' |
| DF/ENT/335/3/32 | Correspondence with Fjellberg, Arne (Bergen, Norway) |
| DF/ENT/335/3/28 | Apterygota artwork, unsorted |
| DF/ENT/335/3/5 | Correspondence, S - Z |
| DF/ENT/335/3/1 | Correspondence, A - D |
| DF/ENT/335/3/26 | Stereoscan notes and sketches |
| DF/ENT/335/3 | Lawrence, Peter Nolan: Correspondence and Papers |
| DF/ENT/335/3/9 | Cave Research Group of Great Britain |
| DF/ENT/335/3/14 | Expedition to Morocco |
| DF/ENT/335/3/30 | Correspondence N - Z |
| DF/ENT/335/3/22 | Collecting record books for England, Scotland, Ireland, Sweden and Switzerland (10 volumes) |
| DF/BOT/440/20/1/20 | Lawrence, P N: The Collembolla of Mull and adjacent islands |
| DF/ENT/335/3/12 | British Schools Exploring Society expedition to Labrador |
| DF/ENT/335/3/2 | Correspondence, E - J |
| DF/ENT/335/3/3 | Correspondence, I - O |
| DF/ENT/335/3/10 | Cave Research Group of Great Britain |
| DF/ENT/335/3/37 | Correspondence with Murphy, D H (Singapore) |
| DF/ENT/335/3/31 | Correspondence with Ellis, Willem N (Amsterdam, The Netherlands) |
| DF/ENT/335/3/21 | Royal Society Solomon Islands Expedition: collecting notebook 'Hand Book' |
| DF/ENT/335/3/38 | Correspondence with Salmon, John T (Wellington, New Zealand) |
| DF/ENT/335/3/34 | Correspondence with Gough, Harold J (Bracknell, England) |
| DF/ENT/335/3/39 | Correspondence with Wallace, Murray M H (Canberra, Australia) |
| DF/ENT/335/3/25 | P N Lawrence Collembola [springtail] collection register |
| DF/ENT/335/3/40 | Correspondence with Healey, Ian Neville: field collecting notes on Cefn Bryn, Wales |
| DF/ENT/335/3/4 | Correspondence, P - Salmon |
| DF/ENT/335/3/11 | Collecting in the Pyrenees |
| DF/ENT/335/3/6 | Correspondence, A - Z |
| DF/ZOO/236/4/167 | External Correspondence: Lawrence, Peter N. |
| DF/ENT/335/3/27 | Illustrations of the Hypogastruridae, plates 1-24 |
| DF/ENT/311/322 | [Unknown artist]: Drawings of Collembolans, also known as Springtails |
| DF/ENT/335/3/23 | Survey of Collembola [springtail] etc in British nature reserves: notes and drafts |
| DF/ENT/335/3/36 | Correspondence with Madge, David S (Rothamsted, England) |
| DF/ENT/311/83 | Lawrence, P: The status of Folsomidiella Bagnall (Insecta : Collembola) and for a review of the genus Neotropiella Handschin (1942) (Insecta : Collembola) |
| DF/ENT/335/3/16 | Royal Society Solomon Islands Expedition: field notes and reports |
| DF/ENT/335/3/20 | Royal Society Solomon Islands Expedition: collecting notebook 'Funnel 2' |
| DF/ENT/335/3/24 | P N Lawrence Collembola [springtail] collection register |
| DF/ENT/335/3/33 | Correspondence with Gama, Maria Manuela da (Geneva, Switzerland) |
| DF/ENT/311/84 | Lawrence, P: Various papers on Collembola |
| DF/ENT/335/3/29 | Correspondence A - M |
| DF/ENT/335/3/8 | Cave Research Group of Great Britain |
| DF/ENT/335/3/17 | Royal Society Solomon Islands Expedition: correspondence on collections and results |
| DF/ENT/335/3/7 | Cave Research Group of Great Britain |
| DF/ENT/335/3/35 | Correspondence with Greenslade, P J M (Adelaide, Australia) |
| DF/ENT/335/3/18 | Royal Society Solomon Islands Expedition: notes and drafts for report |
| DF/ENT/335/3/15 | Royal Society Solomon Islands Expedition: preparatory correspondence and papers |
| DF/ENT/335/3/41 | Survey of Collembola etc in British nature reserves by Lawrence, Peter Nolan: research data |
| DF/ENT/335 | Neuropteroid Section, Correspondence and Papers |
| DF/ENT/339 | Thysanoptera, Phthiraptera and Apterygota Section: Correspondence, Registers and papers |