Traction motors, generators, aux generators

I'm working on the study on American Short Lines. My goal is to identify all Alco locomotives and their traction motors, traction and auxiliary generators, compressors, blowers etc.

I have some difficulties to find information about rebuilt locomotives as GP10, GP8, SD20-2 etc..., and with some specific locomotives as GP7u, GP40-2LW, NW2M, RS-3m etc....

Auxiliary generators, blowers and air compressors exact types/ loco are also not easy to find.

Do you have some technical manuals, or files per Alco locomotive?

I really appreciate your help!

Hmmmm...

Carbone sounds like a manufacturer of carbon brushes-who obviously doesn't know their Alco model designations.

SS