Citations: Anonym 1922: [Hancock, J. L.] New York Times 71 (Nr. 23), S. 15
Hebard 1922: [Hancock, J. L.] Entomological News and Proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia, Philadelphia 33, B15 10004, pp. 160
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. 231, Portr.(Taf. 19)
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. 198, Portr.(Taf. 15)