The Milwaukee Road's 4-8-4s of class S2 had a grate area of 106 square feet. They boasted an evaporative heating surface of 5509 square feet and a superheating surface of 2336 square feet. Other specifications are given on the previous page for No. 206. No. 210 appears here in a photo from the collection of Clifford "Mike" Southard, preserved at the Kishwaukee Valley Heritage Museum in Genoa, Illinois. The locomotive was retired at the end of 1954.