John Wayne and Ben Johnson in "Chisum," Warner Bros. 1970.

John Wayne and photographer David Sutton on the set of "Chisum"

John Wayne in "Chisum," Warner Bros. 1969.

John Wayne and photographer, David Sutton, playing chess on the set of "Chisum," Warner Bros. 1969.

Betting on USC/UCLA football game, on location for "Chisum," Warner Bros. 1969.

Christopher Mitchum and Ron Soble in Chisum (1970)

John Wayne, Glenn Corbett, and Ben Johnson in Chisum (1970)

John Wayne and Forrest Tucker in Chisum (1970)

John Wayne and Ben Johnson in Chisum (1970)