Go to
https://archives.nato.int/ and search for "Canadian Mutual Aid Programme" to find some interesting information on WW2 equipment being offered to NATO allies in the 1950s.
For example:
https://archives.nato.int/uploads/r/...57_ENG_PDP.pdf
Also found a reference to 20-cwt trailers in the NATO archives:
http://www.mapleleafup.net/forums/sh...373#post276373