The following publications contain information about William Van Wyck Reily:
Article: "War With the Sioux: Indian Fights and Fighters; Part II – The Last of Custer" by Cyrus Townsend Brady • Pearson's Magazine • September 1904.
Article: "Profile: Lieutenant William Van Wyck Reily, 7th U.S. Cavalry" by Brian C. Pohanka • Lt. Reily, the youthful ruggedly handsome officer of the 7th Cavalry, is profiled by Brian Pohanka. Pohanka's research probes Reily's brief military career. It examines the influence of his mother in molding his life and her poignant grief following his untimely death. • Greasy Grass, Annual of the Custer Battlefield Historical & Museum Association • Vol. 2 • May 1986.
Article: "From the Museum Archives: Custer Colt — museum firearm goes from intriguing to historically significant" by Paul Knowles, Museum of Northwest Colorado • Craig Press •https://www.craigdailypress.com/news/from-the-museum-archives-custer-colt-museum-firearm-goes-from-intriguing-to-historically-significant/ • March 12, 2019 • Accessed March 16, 2019.