"As for the old F-M 1000 numbered series, not much to say. All the yards here in Milwaukee used 'em as switchers in the mid to late 60's. Stinky little bastards that also blew carbon sparks out the stacks, but they sure did their share of switching. I often got a chance to run one, the controls were really simple. The throttle was mounted in a sideways U shape. Pull down and back and you went forward, up and back and you went backwards. We used to switch 25 to 35 car drags at a time and those little rascals could kick 'em good."