Union Pacific ALCO FA1 1610 and B unit mate lead 114 cars east at 55 MPH near Alda Nebraska in 1958. Otto Perry photo, from my collection.

A pair of SD40Ns spliced by a GP40-2 pull LTB85 out of South St. Paul as they begin the short trip up to Roseport. The 1610 looks pretty good despite being cycled through the SD40N overhaul progra... (more)

UP 1610 and UP 1826 both started life for the Union Pacific (1610 in 1977 and 1826 in 1972) as SD40-2's and were rebuilt to SD40N's. Of interest is the different front blade configurations.

It's a busy day in the Union Pacific's North Yard in Denver. Changing out track in the middle of an operating yard is challenging at best, with track maintenance vehicles jockeying for position a... (more)

UP 1610 (SD40N) works the North Yard after a night of heavy snow.

Four newly-rebuilt SD40-2s looking good through Alviso on the afternoon MRVSJ