Current project is repaint of cosmetically rough SF postwar AA's and newer, smooth-sided Lionel passenger cars in Great Northern Empire Builder livery circa 1957 and later. The Champ decal for the diesels is E-55 and the passenger cars is P-45. I do not know the Microscale or Walthers part nos. for them.
Also, I recently learned that Champ made decals for the NP North Coast Limited that had the same part no. but one variety came with white stripes in a No. 10 envelope, and another variety that came in a small 5" envelope with no striping. For the Empire Builder, I would need the Champ version that includes the stripes. I already have the 5" envelope version of the Empire Builder diesel decals; i.e. no striping, and I'm not looking forward to trying to mask and shoot the nose of the A units--too many curves easily screwed up.
Dig through your stuff and see if you can come up with something I can use; and, check with friends and buddies if you can. And if you know a dealer or vendor with old stock, let me know and I'll be glad to make the calls.
Thanks for looking.