Just looked through Mullet River offerings (which showed only one side door caboose while I have two different
side door kits from them), and saw that they have truck KITS (not inexpensive!), that included CB&Q caboose
trucks, and FOX trucks, idenified as circa 1901, which is later than I thought was the period for Fox trucks offered
once by Central Valley in HO. So...How late were Fox trucks used on Class one railroads in the U.S.? They were
replaced by archbars, when?, which were outlawed, when? (on Class Ones/interchange).