Uncle William was something of a coot, wasn't he.
Do not think this was some penny-ante canner, just becaue it was in Marshalltown. FIe on such presumptions. They were part of Western Grocer, a large foodstuffs distribution concern. Said Time magazine in 1944 of Western's new owner:
Cummings' streamlining is fast and ruthless. He shocks fuddy-duddies in the trade. When he took over Sprague, Warner he found that it was staggering along with some 50,000 descriptive labels because of the traditional practice of buying up trade names when wholesale grocers go out of business, and keeping the names. He dumped all but some 5,000 fast-moving items.
Wonder if Uncle William made the cut.