The following publications contain information about Henry J. Nowlan:
Article: "The Keogh, Nowlan and DeRudio Myth" by Lisle G. Brown • Research Review, Vol. VII, No. 4, Winter 1973.
Photograph: "1Lt. Henry J. Nowlan" • Research Review, Vol. III, No. 1986-2, June 1986.
Article: "Faces, Features, Memorabilia" • A look at Sgt. Charles White, Lt. Edward J. McClernand, scout William Jackson, and Capt. Henry James Nowlan. • Greasy Grass, Journal of the Custer Battlefield Historical & Museum Association, Vol. 15, May 1999.