Southern Pacific No. 2472 was built by the Baldwin Locomotive Works in 1921, and used by the Southern Pacific Railroad until its retirement in 1956, No. 2472 was restored to operation by the Golden Gate Railroad Museum in 1991 and made its inaugural appearance at the Sacramento Railfair '91. The 4-6-2, 150 ton steam locomotive is operated by the GGRM and operates on the Niles Canyon Railway for special events.