That's how you can tell someone was trolling the library, decades later. Because the stamps came in boxes, so a box of 10K consisting of 1K sheets was 8 inches

That's how you can tell someone was trolling the library, decades later. Because the stamps came in boxes, so a box of 10K consisting of 1K sheets was 8 inches thick so 8/1000th of an inch (all made up numbers). My wife is the daughter of a postmaster and by osmosis she knows these things, life in a rural post office isn't always as exciting as a Bukowski novel so this kind of thing has been discussed. There were spools of stamps at various times so that might be a puzzling math problem. On the table in front of me is 1000 sheets of laserprinter paper in two packages about 4 inches thick so 4/1000ths of an inch for letter size 20 pound paper.