He was the subject of a book, Ed O'Kelley: The Man Who Killed Jesse James' Murderer, by Judith Ries, O'Kelley's great-great-niece. (Over the years, historians
Judith Ries (1978-1982), Sally Wilson (1955-1959), Roy Ostberg (1954-1958), Alicia Welch (1956-1960), Georgian Miller (1946-1950), Jim Wildblood (1956-1960)