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Goding, F. W. 1886: [Le Baron, W.] Illinois State Hort. Soc. Trans. 20, pp. 176-178
Howard, L. O. 1930: History of applied Entomology (Somewhat Anecdotal). Smithsonian Miscellaneous Collections, Washington 84, S. X+1-564, B15: 1018
Mills, H. B. 1958 Bull. Ill. nat. Hist. Surv. 27, S. 91-93
Osborn, H. ((Hrsg.)) 1937: Fragments of Entomological History Including Some Personal Recollections of Men and Events. 1 Columbus, Ohio, Published by the Author, 1-394 S., 6024, pp. 221
Osten-Sacken, C. R. 1903: Record of my life and work in entomology. Cambridge (Mass.), pp. 39-40
Smith, J. B. 1910 The Popular science monthly, New York 76, S. 475, pp. 476