Brian Carlson asked:
"Does anyone know what body style of the atlas 1932 ARA car I need for Missouri Pacific prototype? There used to be a description of the body styles on the atlas website but I can’t find it."

Fenton Wells added: 
"...if you find it please publish it as I would like to know as well."

Releases are listed in reverse chronological order here:
http://archive.atlasrr.com/HOFreight/arc-ho1932boxcar.htm

Variation descriptions are in the December 2015, August 2013, and October 2011 releases.

Ben Hom