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Osborn, H. 1937: Fragments of Entomological History Including Some Personal Recollections of Men and Events. 1 Columbus, Ohio, Published by the Author, 1-394 S., B15: 6024, pp. 284, Portr. (Taf. 39)
Osborn, H. 1952: A Brief History of Entomology Including Time of Demosthenes and Aristotle to Modern Times with over Five Hundred Portraits. Columbus, Ohio, The Spahr & Glenn Company, 1-303 S., B15: 6024a, pp. 233, Portr. (Taf. 30)
Wade, J. S.; Baker, W. A.; Poos, F. W. 1953: [Walton, W. R.] Proc. Ent. Soc. Washington, 55, B15 10215, pp. 103-108