Penn Central

[railohio]

Atlas has done more than one in N scale in the modern era:

C628
GP7
GP30
GP38
GP38-2
RSD-5
SD9
U25B

Going back to a 1973 AHC ad in Model Railroader I see a half-dozen locomotives in Penn Central:

Atlas GP40
Atlas SD45
Atlas SW1500
Con-Cor EF-70 Box Cab Electric
Rapido FA-1
Trix U28C

Additionally, I remember seeing Trix F9s and Rapido/Arnold GG1s in Penn Central from the same era.