Magnum distributed photographs by Lawrence Schiller. See http://www.magnumphotos.com/C.aspx?VP3=SearchResult&VBID=2K1HZOQ6SF2QVZ
One image found from "Gary Gilmore's life portrayed in 'Executioner's Song' MAGNUM Distro 82-37".
Prints credited with "Photos by Lawrence Schiller, "The New Ingot Company" distributed by "MAGNUM Photos"