Re: Helped needed with reefer identification
They were almost certainly FGEX consortium cars, whose truss rod cars ran into the 50s. In 1948 they comprised almost 12% of FGEX, more than 41% of WFEX, and over 10% of BREX, or more than 21% of their combine fleet. By ‘53 it was less than 3%.
Sunshine and Resin Car Works have released some models, and I posted how I plan to model them here:
There is an excellent article by Bill Welch in Prototype Railroad Modeling Journal Vol 2 by available from Speedwitch Media:
Modeling the New Haven Railroad 1946-1954