“Wisconsinites, Cans with no Can Opener and British Stamps”
The U.S. government has a guide for the official name for people from every state, from Alabamian to Wyomingite.
Canned food was invented in 1810 . . . but the can opener wasn’t invented until 1858. So in those 48 years in between, people had to use a hammer and chisel to get it open.
The U.K. is the only place that doesn’t put its name on its stamps, because they were the first to produce them.