ATSF 920 and EMC E1 number 6 lead train 21, a five car El Capitan doing 35 MPH on the east side of Raton Pass near Starkville Colorado, in 1938. Otto Conrad Perry photo from my collection.
ALCO PA1 56 and mates lead Santa Fe train 3, the California Limited, west of Bernalillo New Mexico in 1947, with 13 cars at 25 MPH. Otto Conrad Perry photo from my collection.