Along time ago, I asked whether my scratch built reefer was apocryphal and there was a reply with info that verified there were such cars. But that thread was so long ago that I could not find it so I resorted to google. I found images of several cars googling "35 foot refrigerator rr cars."
White Swan Shortening, Carstens Packing Co., USA; Seattle Car Mfg Co, Builders. The image is car no. T.C.L.R. 108.
Frye & Company Refrigerator Line, Car 508, same car mfg co.
Here is a photo of my scratch build version. I used a donor car for the frame, arch bar trucks and o gauge couplers.
I am interested in rr oddities that would be enjoyable and not too difficult to build.