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https://stairnaheireann.net/2018/01/31/otd-in-1797-the-us-sign-is-first-published-in-an-accountancy-textbook-invented-by-derry-born-oliver-pollock/
#OTD in 1797 – The US ($) sign is first published in an accountancy textbook – invented by Derry-born, Oliver Pollock