UP 165 - Sep 1 1957 - Loco no 3997 4-6-6-4 Challenger westbound @ Dix NEB - by Jim Ozment
UP 115 - Aug 10 1959 - no 3965  4-6-6-4 Challenger @ Laramie WY - by Jim Ozment
UP 116 - Aug 10 1957 - no 3965 54-6-6-4 Challenger @ Laramie WY - by Jim Ozment
UP 165 - Sep 1 1957 - Loco no 3997 4-6-6-4 Challenger westbound @ Dix NEB - by Jim Ozment
UP 116 - Aug 10 1957 - no 3965 54-6-6-4 Challenger @ Laramie WY - by Jim Ozment
UP 115 - Aug 10 1959 - no 3965  4-6-6-4 Challenger @ Laramie WY - by Jim Ozment
UP 515 - May 3 1970 - no 3985 4-6-6-4 Challenger @ Cheyenne WY - by Jim Ozment
UP 165 - Sep 1 1957 - Loco no 3997 4-6-6-4 Challenger westbound @ Dix NEB - by Jim Ozment
UP 165 - Sep 1 1957 - Loco no 3997 4-6-6-4 Challenger westbound @ Dix NEB - by Jim Ozment
UP 165 - Sep 1 1957 - Loco no 3997 4-6-6-4 Challenger westbound @ Dix NEB - by Jim Ozment
See photo in original gallery.