Frisco No. 1615 is a 2-10-0 "Decapod" type steam locomotive. It was built by Alco in 1917 as #58829 for use in Russia, but was diverted as USRA #1015 because of the Russian Revolution.
It was converted to Standard Gauge, and given to the Pennsylvania Railroad, before being purchased by the St. Louis–San Francisco Railway. It was originally used as a mixed traffic engine until the end of steam on the St. Louis–San Francisco Railway in the early 1950s.
After its withdrawal it was sold to Eagle-Picher in November 1951, who used it to haul lead ore to a smelting plant.
It is now seen on static display at Cole Heights Park, in Altus, OK.