Railroads. Locomotives Locomotive with built-in tilt added to Colorado Railroad Museum. RMN 0 15, 1968 p.8 World's largest steam locomotive given to Colorado Transportation Museum. RMN Ap 12, 1969 p.95 Post Ap 11, 1969 p.2 #346, oldest operable steam locomotive in Rocky Mountain region makes short run at Colorado Railroad Museum. Post Jy 21, 1974 p.32 A history of the Climax Locomotive Manufacturing Co. Narrow Guage and Short Line Gazette v.2 #1 Mr 1976 p.26