(en) Matthew Algeo, Pedestrianism : When Watching People Walk Was America's Favorite Spectator Sport, Chicago Review Press, Incorporated, , 184 p. (ISBN978-1-61374-397-3, lire en ligne)
(en) « The champion pedestrian.; Daniel O'Leary's great walk at Liverpool - He covers 502 miles in less than six days - An American victory. », The New York Times, (lire en ligne, consulté le )
(en) « Charles Rowell dead.; Noted Pedestrian Won Two Six Days' Contests in Madison Square Garden. », The New York Times, (lire en ligne, consulté le )