Denver & Rio Grande Western Diesel Engines Nos. 5771 & 5762 (S)

The last operational F-unit on the Rio Grande, F9 Diesel Engine No. 5771 powered the Rio Grande Zephyr passenger train between Denver and Salt Lake City from 1971 to 1983. The Rio Grande Zephyr was the last non-Amtrak intercity passenger train in the United States. In 1984 Nos. 5771 & 5762 powered the Ski Train from Denver to Winter Park and back each weekend. Both were retired that year and donated to the Museum in 1996.