- Hope Entomological Library, Oxford University Museum of Natural History: ARW 61
- Hope Entomological Library, Oxford University Museum of Natural History: ARW 61
- Marchant, J. (Ed.). (1916). In: Alfred Russel Wallace; Letters and Reminiscences. Vol. 2. London & New York: Cassell & Co. [pp. 71-72]
About Poulton's British Association address. Geological Ideas.