Citations: Anonym 1906: [Thomas, C.] Nat. Cyclop. Amer. Biog. 13, pp. 258-259
Anonym 1910: [Thomas, C.] Science 32, pp. 53
Essig, E. O. 1931: A History of Entomology. New York, Macmillan Company, VI+1-1029 S., B15: 4884, pp. 770-772, Portr.
Forbes, S. A. 1910: [Thomas, C.] Journal of Economic Entomology ISSN: 0022-0493, Menasha/Wisc 3, B15 10592, pp. 383-384
Goding, F. W. 1888: [Thomas, C.] Ill. Hort. Soc. Trans. n.s. 22, pp. 106-108
Heppner, J. B. ((Hrsg.)) 1999: The Pioneer Century of American Entomology, by H. B. Weiss. Chapter VII-VIII. Lepidoptera news, Gainesville 1999 (3), S. 11-32, B15: 12092, pp. 17-18
Howard, L. O. 1930: History of applied Entomology (Somewhat Anecdotal). Smithsonian Miscellaneous Collections, Washington 84, S. X+1-564, B15: 1018, pp. (Taf. 2)
Mallis, A. 1971: American Entomologists. Rutgers Univ. Press New Brunswick, B15 A1642, pp. 50-52, Portr.
Milis, H. B. 1958: [Thomas, C.] Bull. Ill. nat. Hist. Surv. 27, pp. 93-94, Portr.
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. 140, Portr. (Taf. 18)
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. 229
Rehn, J. A. G. 1910: [Thomas, C.] Entomological News and Proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia, Philadelphia 21, B15 10004, pp. 387-388