On September 24, 1945 Clayton Tinkham captured former Panama Mogul #610 class M2 still in service at Anchorage. Built as 5 foot gauge for the ICC/Panama by Alco/Brooks in January of 1906 this locomotive and sisters were shipped to Alaska in 1917 for the Alaska Engineering Commission. The drivers were regauged by installing extra wide tires that moved the flange 1.75 inches inside. This made them very rough riders over grade crossings and switches because the wheels stuck out further than the rest of the train and caught every pebble and ice chunk left behind. Upon completion of AEC construction they were transferred to the Alaska Railroad roster in January 1922.
 

Photo courtesy of Clayton Tinkham (MATI Collection)