UP: From Steam to Green: The History and Evolution of Locomotives

How passenger and freight rail locomotives have changed throughout history, from steam locomotives like the Big Boy to fuel efficient and battery-electric locomotives

Diesel Locomotives Of The 1930s, 1940s, 1950s, and Today

Steam locomotive - Wikipedia

The Union Pacific Railroad

Streamlined Steam Locomotives

Slug units: A historical overview - Trains

1880 Train - South Dakota Rail in the Scenic Black Hills

Steam Locomotives (USA)

Trains, stargazing put Ely on the map. Critics fear clean energy project could undo that. - The Nevada Independent

Colorful History #78: History of the U.S. Railway

Evolution & History of Steam Locomotives - Strasburg Mechanical

Steam locomotive - Wikipedia

How did people get steam locomotives back on tracks in the 19th century? - Quora

Williams Grove Historical Steam Engine Association

Steam locomotive - Wikipedia