The following publication contains information about John McGuire:

Article: "John McGuire's Story of the Battle: A 7th Cavalry survivor's account of the Battle of the Little Bighorn" by Bruce Brown • Astonisher.com • Undated • Accessed August 15, 2025.

Article: "McGuire also fought with 7th Calvary" by Bob Fulton • The Indiana Gazette • June 28, 2020 • Accessed July 2, 2020.