Really a nice treat to see a vintage SP unit without those darn patches! Thank you for sharing.
  | 
 
This brings back memories of when I worked near Flaxton on an oil rig.  These units were a common site.  I am disapointed I cannot find a pic I got of an old Milwaukee Road caboose right down the tracks in Bowbells, ND.
  | 
 
  |