@glacierrunner posted:Dave, thanks for all the additional information!! At any time were these engines and cars ever used on the western lines? I live in Missoula, Montana and I only see pictures of electric engines!
The Hiawatha's were Streamliners.
The Olympian Hiawatha started service June 29, 1947. Prior to that date, service was provided over the Olympian route with MAINLY Heavyweight Equipment. Keep in mind that the earlier Hiawatha Equipment discussed here was for "Day Trains". The first Hiawatha Sleeping Cars were built for the 1947 train.
Of course the Milwaukee had electrified the Rocky Mountain Division by 1917 as it worked MUCH better than trying to run steam trains through the mountain ranges. Electric equipment was used ALMOST exclusively in this area for both Freight and Passenger Service.
All new equipment was ordered for The Olympian Hiawatha including Diesel Locomotives.
So the answer is PROBABLY NOT, however there could have been an "exceptions".