The Kansas City Mule after its reverse move arrives at Union Station platform, facing east for its afternoon departure to St. Louis. Digital image.

Westbound Texas Eagle through Tower 55. Digital image.

Eastbound Texas Eagle. Digital image.

The Southwest Chief prepares to cross I-40 as it races across western New Mexico just east of Grants, N.M., en route to Albuquerque, N.M.

The eastbound Southwest Chief starts its negotiation of the famous Horseshoe Curves, between Albuquerque, N.M., and Las Vegas, N.M. Shot with 50MM lens, 200 speed film.

The Sunset Limited rolls through S-curves at Cienga Creek Preserve, near Pantano, A.Z., east of Tucson, A.Z.

Sunset Limited races the sunset at Steins, N.M., just west of Lordsburg, N.M, en route from Tucson, Ariz., to El Paso, Texas, and points east.

The eastbound Sunset Limited rounds Buell curve, ready to roll under I-10 between Pantano and Mescal, Ariz. Digital camera shot.

The eastbound Sunset Limited exits an s-curve and prepares to duck under I-10 just west of Benson, Ariz., en route to El Paso, Texas and points east. Digital camera shot.

Amtrak's Coast Starlight rounds a scenic mountain curve in northern California north of Dunsmuir, Calif., en route to Klamath Falls, Ore. This part of the route is often traversed in darkness.

The Southwest Chief rolls through Apache Canyon, near Glorieta, N.M.

Amtrak's eastbound Southwest Chief passes scenic Devil's Footstep, between Lamy, N.M., and Albuquerque. Shot with 80-200MM zoom lens, 200 speed film.

The westbound Southwest Chief rolls through the northern New Mexican mountains and prairies at Tanaja. Shot with 80-200MM zoom lens, 200 speed film.

The westbound Southwest Chief rolls through semaphores at the Chapelle, N.M., siding, between Las Vegas, N.M., and Albuquerque, N.M. Shot with 80-200MM zoom lens, 200 speed film.

Amtrak's eastbound Southwest Chief negotiates the famous Horseshoe Curves, between Albuquerque, N.M., and Las Vegas, N.M. Shot with 80-200MM zoom lens, 200 speed film.