The Santa Fe's (AT&SF) 5011 sit quietly out of the elements at the Museum of Transportation of St. Louis. The 5011 was the last generation of new steam locomotives purchase by the Santa Fe introduction by Baldwin Locomotive Works in 1944 the late version of the Texas Locomotive fleet. A total of 25 of these large engines were built. Numbers 5011 to 5035, when built, it was the Largest and Most Powerful Class of 2-10-4 "Texas" Type Locomotives ever built, and was dub the name "War Babies" by the Santa Fe due to the being built during World War II. The 5011 Class 2-10-4 served on the Santa Fe until the mid to later 1950s where they we're replace by the diesel locomotives. In 1959 4 of these Texas type locomotives were picked out by the AT&SF to be preserve by certain museums, the other 21 were scrapped. 5011, 5017, 5021, and 5030 are the current soul survivors of the 5011 Class 2-10-4s series locomotives. Most of these 2-10-4 on the Santa Fe served on Passenger, and Freight Service between Belen to Carlbad, NM on the Santa Fe's Areaiold Pecos Div.