Steam locomotive profile: 4-6-6-4 Challenger

Steam locomotive profile: 4-6-6-4 Challenger

By Neil Carlson | June 13, 2006

Union Pacific 4-6-6-4 Challenger No. 3976

Want unlimited access to Trains.com?

Learn More Start Your Free Trial

You’ll get complete access to all content on Trains.com from our family of brands, PLUS thousands of issues in the archives, video series and workshops, live webcams and more!

 


 

Magazine subscribers enjoy access to online subscriber benefits.

Learn more about magazine subscriber access

Already a magazine subscriber? Sign In