I have an AtlasO ACF 70-ton 2-bay 1958 cu ft covered hopper lettered for Boraxo with reporting marks of GACX 40231 Blt 9-50 New 9-50.
Is anyone familiar with the commodity / commodities shipped in these cars and potential destinations?
I don't recall ever seeing one in service, but I do recall "Twenty Mule Team Borax" being the sponsor of "Death Valley Days" when I was a youngster (and those who also recall know how long that has been).