Tim Gilbert wrote

As per these captions, it would appear that of the images included in
http://www.athearn.com/Newsletter/041806/50_ice_reefer_041806.jpg , only
the Super Chief (Athearn #94513-94515 would be correct

Yep, just as for the 65' gondola, Athearn is going to play "close enough".
For example, the Grand Canyon scheme was applied to the Rr-42's which are
similar in appearance (in the sense that the Erie-Lackawanna 65' mill gons
are similar to the Athearn model). (To model the Rr-42 one needs a metal
running board too.)

Tim O'