Believe It Or Don't:
It is not well known that waaaaay back in the 1920s, a researcher developed a clever way to track salmon by their urine in the water.
The ultimate version of this electrochemical device could even track individual fish.
The young scientist who'd invented the thing had relied on grants from various sources, including Henry Ford. Ford was notoriously tightfisted and the company's bookkeeping, despite Edsel's efforts at reform, bordered on chaotic. The explains why, one fine afternoon at his camp along a watercourse in the Pacific Northwest, the developer was sitting on the bank, going over a huge pile of receipts, when, suddenly, a breeze took one for $10,000 -- an enormous sum of money at the time -- blew it out over the water, and a salmon snapped it up!
Well, he had to have that receipt, so there was nothing for it but to get out the fish-tracking apparatus and set forth; after nearly 18 hours of tracking, he found and netted the fish and, amazingly, the paperwork was still readable.
...And that, dear reader, is why to this very day, Salmon P. Chase is on the ten thousand dollar bill!
6 months ago