- Natural History Museum, London: NHM WP1/3/5
- Wallace, A. R. (1905). In: My Life: A Record of Events and Opinions. Vol. 1. London: Chapman & Hall. [pp. 142-143]
Asks about closure of Hertford library and sale of its books; describes his rail journey to Kington area, ecstatic about outdoor pleasures of enjoying nature while land surveying; Chartists are gaining strength, ominous for nation.