https://www.mrctv.org/blog/monkey-see-monkey-do-story-jack-signalman
"During the late 1800’s, travelers often reveled in a peculiar sight. At the rail station in Cape Town, South Africa, there was actually a very intelligent baboon who worked the levers that sent signals to inform engineers which track they should take. His name was Jack."
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A longer article:
http://www.todayifoundout.com/index...eanuts-beer-fascinating-story-jack-signalman/
Bruce
