Santa Fe 5000, built by Baldwin in 1930, was the road’s first 2-10-4 designed as such. (One member of the road’s 3800 class of 2-10-2s was built in 1919 with a four-wheel trailing truck.) Nicknamed “Madam Queen” after a comic strip character, No. 5000 laid the groundwork for the greatly enhanced 5001 class of 1938.
W. O. Gibson photo
Santa Fe’s “Madam Queen”