Sound Recordings of Rio Grande's trio of F9s on the Rio Grande Zephyr & Ski Train 

This video contains a pair of sound recordings of the Denver & Rio Grande Western's last three F9 units, 5771, 5762 & 5763 in 1983 and 1984. First up is the arrival of the Rio Grande Zephyr in Salt Lake City in February 1983. The second recording is the departure of the Ski Train from Winter Park Colorado in February of 1984.