The following publications contain information about Francis Marion Gibson:
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: "Francis Marion Gibson, Captain, United States Army" • Arlington National Cemetery Website: http://www.arlingtoncemetery.net/francism.htm, 2000.