>>Which begs the question; How many double sheathed cars were still
around in the 50s?
Fifties" is a ten year long span of time with a VERY significant marker stuck
in about one third of the way through. Are you talking before or after the
K-brake ban? Because the numbers will look VERY different.
and ONLY going off of memory here, there were around 40,000 double sheathed
cars in 1950, and less than 4,000, mostly all ventilated boxcars or shortline
cars, in 1959).