The following publications contain information about Marcus Henry Kellogg:
Article: "Lounsberry's Famous News Scoop, Custer Massacred" by Louise Cheney • Real West • Vol. VII, No. 37 • September 1964.
Book: Custer's "Mysterious Mr. Kellogg" and the Diary of Mark Kellogg by John Hixon, State Historical Society of North Dakota, 1950.
Article: "North Dakota Comes into Its Own" by Leo A. Borah • The National Geographic Magazine • Volume C, Number Three, September 1951.
Article in Canadians with Custer in 1876 by Bernie Rosevear and Stephen Rosevear, Monroe County Library Sysytem, 1992.