Alcomotive
Grandson of an ALCO Builder
https://atlasrescueforum.proboards.com/thread/7340/talk-thrall-door-cars-links?page=1
I always thought the All Door cars were neat. It seems to be a type of car that disappeared REALLY quick. I imagine the implementation of the centerbeam really did them in. Seems like they were essentially all but gone by the early 1980's short of a handful. Here is the page for them from the 1970 Car & Loco Cyclopedia.
It seems Walthers has 3 "generations" of All Door. The original Walthers, the upgraded Walthers with the nicer ladders, and the former Life Like car, which the dead giveaway for those is the pegs on the side that hold the floor in. I have seen all 3 versions in the same box, so be careful before you buy them. The upgraded Walthers version is now a Proto line car if I recall.
PS: Also this http://www.trainweb.org/mccloudrails/Equipment/AllDoorBoxcars.html
Very cool! Thanks for sharing this information!
Awesome!