Burlington Route Mikado 4961 rests at the coal tower in Galesburg, Illinois, in December 1956. At this late date in the steam era the CB&Q was still using several class O-1A 2-8-2s on the Galesburg hump yard. With the Burlington Route's dieselization virtually complete, its remaining "Mikes" were glad to eke out a few more precious years in this menial task. Built by Baldwin Locomotive Works in 1923, No. 4961 featured 64-inch drivers, 27x30-inch cylinders, and a boiler pressure of 200 p.s.i. The O-1A class exerted 55,000 pounds of tractive effort and weighed about 290,000 pounds minus tender. For other dimensions of the class, see the commentary on No. 5090.