As I do decaling for my own models, I plan on posting artwork for the main paint schemes of each car. Here is a guide for the U15 artwork. ACL and SCL are white lettering on black. The CSX version comes in either tan with black lettering or black with yellow lettering. I only included the lettering of which I was able to find legible examples.
Here is a PDF to see the art in more detail. U15 Vector Art
Here is a printable Black and White PDF scaled for N scale 1:160. You can print these out on some decal paper using a laser printer and scale them to any size without losing definition. U15 Vector Decals
I’ll add more printable files as I make them.