- Hope Entomological Library, Oxford University Museum of Natural History: ARW 110
- Marchant, J. (Ed.). (1916). In: Alfred Russel Wallace; Letters and Reminiscences. Vol. 2. London & New York: Cassell & Co. [p. 100]
About Poulton's addresses, to be given to the Linnean Society. Also mentions Bedrock. [Poulton's presidential address to the Linnean Society for 1913 and 1914 was about two pamphlets supposedly written by George Washington Sleeper, i.e. "Shall we have Common Sense? Some Recent Lectures" (Boston, 1849) and "shall We Have Free Speech: Education and its Offspring, Civilization" (Providence, 1860). Poulton's address was published as "A Remarkable American Work upon Evolution and the Germ Theory of Disease", Proceedings of the Linnean Society, 1913-1914].