| RefNo | Title | Source |
| WP/5/1/2 | Report of the Land Nationalisation Society 1891-92 | |
| WP/1/2/28 | Alfred Russel Wallace to Violet Wallace, from Parkstone, Dorset | |
| WP/1/2/29 | Alfred Russel Wallace to Violet Wallace, from Parkstone, Dorset | |
| WP/12/4 | Appendix of 'Principles of Biology' by Herbert Spencer | |
| WP/12/31 | 'Evolution, Darwinian and Spencerian, The Herbert Spencer Lecture…by Raphael Meldola F.R.S' | |
| WP/12/19 | 'Les Notions Physiques fondamentales selon Spencer' by Thomas Tommasina | |
| WP/1/1/104 | Letter from Alfred Russel Wallace to his son William Wallace, from Broadstone, Dorset | |
| WP/1/1/187 | Letter from Alfred Russel Wallace to his son William Wallace, from Broadstone, Dorset | |
| WP/1/9/14 | Herbert Spencer to Alfred Russel Wallace from [Kildare], Bournemouth | |