SD45s 929 and 942 at Memphis, Tennessee in June 1977. Union Pacific 717B is a GP30B.
UP 2884 is a U30C. This unit was built by General Electric for the UP with builder number 39605 in August 1974. It was retired and traded into EMD in August 1986.
SD45s 929 and 942, GP38-2s 459 and 413 and U30B 850 at Memphis, Tennessee in June 1977.
Visible on the left side is a third locomotive we can identify by number, SD45 936.
Both photographs were taken at the locomotive service tracks area in the locomotive mechanical area at Tennessee Yard. The view is looking northwest.
Special thanks to Mark Davidson.