Citations: Anonym 1936: [Ewing, H. E.] Proceedings of the Entomological Society of Washington, Washington 38, B15 10215, pp. 113
Anonym 1951: [Ewing, H. E.] Journal of Economic Entomology, College Park / N.Y. 44, B15 10592, pp. 270
Baker, E. W.; Gurney, A. B. 1951: [Ewing, H. E.] Proc. Ent. Soc. Washington, 53, B15 10215, pp. 147-149
Mallis, A. 1971: American Entomologists. Rutgers Univ. Press New Brunswick, B15 A1642, pp. 421-422, 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. 200, Portr.(Taf. 34), Geburtsjahr 1893
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. 191, Portr.(Taf.29), * im Text 1893, auf Taf. 1895