History of Mass Transportation: A 44-ton 1-B-1 experimental gas-turbine locomotive designed by R. Tom Sawyer and built in 1952 for testing by the U.S. Army Transportation Corps
By Kbh3rd - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=5545061 Source: Link: https://en.wikipedia.org/wiki/Gas-turbine_locomotive ____