of the cars lasted to 1960. My question is whether the original trucks
would still have been legal by that date. The referenced photo below shows
one of these cars with a more modern ARA/AAR design truck, but I'd like to
know if the original trucks had to be replaced by a mandate before
All "T" "L" and "I" section truck side frames were
prohibited in interchange on, and after, January 1, 1957.