From Richard Crabtree on Frisco Rails Across Missouri: Here we are down at the Frisco Depot at Mill & Main in Springfield, Missouri. We see Frisco No. 4310 4-8-2 Heavy Mountain Class built in the Frisco West Shops in Springfield in 1936. Sitting right next to her is Frisco No. 1049 4-6-2 Pacific built by the Schenectady Locomotive Works in 1910 in the 1940s.