The legendary photographer Otto Perry captured this AT&SF 17 car mail train, number 8, doing 50 MPH at Bernalillo New Mexico on September 20th 1947. Otto Conrad Perry photo, from my collection.
A four unit EMD FT set, led by ATSF 106, takes 83 cars east doing 30 MPH, just west of Dalies New Mexico in 1946. Otto Conrad Perry photo from my collection.