- Hope Entomological Library, Oxford University Museum of Natural History: ARW 94
- Hope Entomological Library, Oxford University Museum of Natural History: ARW 94
- Marchant, J. (Ed.). (1916). In: Alfred Russel Wallace; Letters and Reminiscences. Vol. 2. London & New York: Cassell & Co. [pp. 88-89]
About butterfly collections in the museum. Had enjoyed a visit as Mr Rothschild had brought out cases of butterflies from Tring. About Poulton's invitation -ARW must decline as he cannot stay away from home for more than one night without discomfort. "All the attractions of your celebrations are, to me repulsions." About his planned book.