GP7 539
GP7 539 at Chaffee, Missouri in 1970 (Ken McElreath).
GP7 539 at Chaffee, Missouri in 1970 (Ken McElreath).
GP7s 574, 603, 539 and VO-1000 232 at Fort Smith, Arkansas on February 13, 1972.
GP7 539 at Springfield, Missouri on December 7, 1971.
GP7 539 (date and location unknown). The roadnumber of the caboose is unknown.