Dean Payne asked:
"Does anybody know of a source for any of these [N scale Fowler
boxcar decals]?"
Earl Tuson replied:
"CDS Lettering."
Specifically:
Canadian National - Set N-12
Canadian Pacific - Sets N-14, N-286
These are dry transfers and might be a bit tricky to get around an N
scale SS boxcar car side. If you're not comfortable with this, I
recommend applying these on decal paper, turning them into decals,
or skip all of this by picking up a couple of Allen Ferguson's decal
sets.
Ben Hom