SP 6100B
This loco was built in 5/1947 with EMD construction number 4542. It was built as a 1500 hp F3 B-unit. It was painted in the SP's standard for the time black widow colors.
Her alpha suffix was to have been done away with when the F3 fleet was renumbered in late 1949. She was to have became SP 8000, but was sent to the T&NO and renumbered as T&NO 500 prior to this number being applied.
She was rebuilt as an F9M at Houston and renumbered T&NO 720 in 07/18/1956.
She was retired on 11/20/1967 and sold to EMD on 12/27/1967.