The biggest steam locomotive is whistle-stopping across the U.S.
Huge crowds of train fans turn out as the 1940s era Big Boy steam locomotive is making a rare trip cross country.
Huge crowds of train fans turn out as the 1940s era Big Boy steam locomotive is making a rare trip cross country.
This article was originally published at: https://www.npr.org/2026/07/11/nx-s1-5872656/big-boy-loco...