Splitting dollar bills (like splitting cards) has gained popularity in the last decade. I honestly thought it was a new thing, however I was reading Ansology and in Max Maven’s book Thabbatical from 1994 he casually mentions it!
Unfortunately he doesn’t mention HOW it was done back then, but I can’t imagine its too different from how we do it now. I’m also very curious WHO was doing it back then.
-Louie