Citations: Gilbert, P. 2007: A Source Book for Biographical Literature on Entomologists Leiden, Backhuys Publishers, 694 S., A 2972, pp. 33
Herriott, F. I. 1936: [Barnard, W. S.] Annals of Iowa 20 (3), pp. 323-359, Portr. + Schr.verz.
Howard, L. O. 1909: [Barnard, W. S.] Proc. Ent. Soc. Washington, 11, B15 10215, pp. 15
Howard, L. O. 1932: [Barnard, W. S.] Proc. Ent. Soc. Washington, 36, B15 10215, pp. 54
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. 179-180, Portr.(Taf. 15)
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. 178, Portr.(Taf. 13)
Wade, J. S. 1936: [Barnard, W. S.] Proc. Ent. Soc. Washington, 38, B15 10215, pp. 105
Wilder, B. G. 1887: [Barnard, W. S.] The American Naturalist, a monthly Journal devoted to the Natural Sciences in their widest sence, Philadelphia/Pa. 21, B15 10214, pp. 1136-1137