Hello all thank you for more background and pointing the direction for even more ..
Here are two photos from O Scale Railroading ..found in Jan/Feb 1983 .... showing Gil and a tail shot of my engine ..describing it as freelance . Gil had an open house for the O scale convention that year . Very impressive layout with lots of big engines .
Article mentions another article in MR Feb 1972 ... I'll hunt that down for more insights on the American Central and Gil
Cheers Carey