Busy Butler Yard A Chicago and North Western train led by SD45 No. 946 waits for a new crew on the westbound main, as two other trains make setouts/pickups at Butler Yard at Butler, Wisconsin, in September 1984. Lots of trains to see, a GP7 yard switcher with a 567 whining away bumping cars on the far ladder, a full caboose track, and flowers are planted around the yard office flag pole. All is right in the world on this late summer day… at least for this young train watcher.