Light power waits for orders in the Union Pacific's North Yard in Denver, Colorado.

Amtrak engine #198 (P42DC) leads the California Zephyr through the North Yard in Denver, Colorado.

Under storm clouds with sun rays peeking through, UP 8668 (SD70ACe) leads the Grand Junction to Denver train through Plainview, Colorado on the Moffat Tunnel Sub.

Arched Arrows. NJ Transit Arrow III no. 1329 is the lead unit on Montclair-Boonton Line train 267, seen crossing the Second River en-route to Montclair State University.

Santa Fe train 17, The Super Chief, East of La Junta Colorado in 1937. Otto Conrad Perry photo, from my collection.

AT&SF train 21, El Capitan, is assisted on Raton Pass at Wootton Colorado in 1938. EMC 1 number 6 and five cars trail behind the 2-10-2. Otto Conrad Perry photo, from my collection.

Durango & Silverton 480 and 493 rest in the Durango Roundhouse late into the evening.

Santa Fe train number 21, El Capitan, is ascending Raton Pass west of Trinidad Colorado in 1946. Otto Conrad Perry photo, from my collection.

Nevada Northern 81 leads its train upgrade through Robinson Canyon on a cloudy June day.

EBT 16 passes the car shops with a mixed train. Taken with a 1949 Argus C3 utilizing Illford HP5 film

16 exits Big Fill into a woods. Taken with a 1949 Argus C3 utilizing Illford HP5 film

AT&SF 2-10-2 3813 is in charge of a 79 car freight at La Junta Colorado in 1932. Otto's speed estimate was 15 MPH. Otto Conrad Perry photo, from my collection.

Santa Fe train number 23, The Grand Canyon Limited, is arriving San Bernardino California in 1934. Otto Conrad Perry photo, from my collection.

AT&SF 4-6-2 3503 is seen with eight cars at Oklahoma City in 1936. Note the clanging bell. Otto Conrad Perry photo, from my collection.

AT&SF 4-8-4 3780 emits an impressive smoke plume as it leads second number 3, The California Limited, at 40 MPH south of Bernalillo New Mexico in 1947. Otto Conrad Perry photo, from my collection.