The 0-8-8-0 camelback was Erie, not P&R.
Anyway, the topic of the post was related to the age of the models, not the prototypes they represent. As in Varney and Mantua HO from the 40’s, and so forth.
There are still a decent number of moderls who model preo-1900’s, or right around the 1900’s. Seems to be about a 40-50 year gap on the most popular eras to model, my guess is most likely due to the age of the modeler and wanting to recreate their childhood memories. In model magazines of the 50’s, there were plenty of turn of the 20th century railroads. As time moved forward, the more popular model era moved forward along with it. Plus the ‘present’ is always popular. We’re seeing a lot more interest in the 60’s and 70’s now than the 40’s and 50’s.
–Randy