The following publications contain information about Charles DeRudio:
Article: "The Keogh, Nowlan and DeRudio Myth" by Lisle G. Brown • Research Review, Vol. VII, No. 4, Winter 1973.
Query with Answer: Since DeRudio was involved in a plot to kill Napoleon III [and presumably hated him] why did DeRudio wear a Napoleon-style "imperial"?
Article: "Charles DeRudio: European Assassin" by Dale T. Schoenberger • Research Review, Vol. XIV, No. 1980-9, September 1980.
Photograph: "Lt. Charles DeRudio, Convicted 'Murderer' in the "Orsini Affair'" • Research Review, Vol. XIV, No. 1980-9, September 1980.
Article: "Rudio Revisited: Searching for the Man Beyond the Stereotype" by Cesare Marino • Dr. Marino outlines in a brief biography one of the lesser known but very colorful officers of Custer's Seventh Cavalry. • Research Review: The Journal of the Little Big Horn Associates, Vol. 18, No. 1, Winter 2004.
Article: "The Tragic End of Capt. Thomas H. French" by Bob Snelson • Greasy Grass, Annual of the Custer Battlefield Historical & Museum Association • Vol. 27 • May 2011.