Citations: Anonym 1961: [Ballou, C. H.] Bulletin of the Entomological Society of America, College Park, Md. 7 (4), B15 10270a, pp. Umschlagseite
Osborn, H. 1946: Fragments of Entomological History Including Some Personal Recollections of Men and Events. 2 Columbus, Ohio, Published by the Author, 1-232 S., B15: 6024, pp. 125, Portr.(Taf. 16)
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., 6024a, pp. 177, Portr.(Taf. 34)