His style can only be described as "derivative" and he used the names of well-known characters (Butch Cassidy, Macho Callahan, Django and Sartana) and variations of titles (including numerous "Fistfuls" or "Barrelfulls") to disguise the fact that most of his efforts were routine at best.
Mary Callahan Erdoes | Callahan | Macho Dancer | Callahan's Crosstime Saloon | Vince Callahan | Sonny Callahan | Macho Man (song) | Macho Man | macho | Joseph T. O'Callahan | John F. Callahan | Francesco D'Macho | Errett Callahan | David Callahan | Alejandro Díez Macho | William F. Callahan | They Call Me Macho Woman! | Nixey Callahan | Nancy Callahan | Mushy Callahan | Michael Callahan | "Macho Man" Randy Savage | Macho Like Me | Macho like Me | Macho Callahan | Macho | K. J. Callahan | John Ross Callahan | John B. Callahan | Jay O'Callahan |