Ada Coleman was head bartender at the American Bar at the Savoy Hotel in London in the early 20th century. She created a cocktail that is still served today, and she's an enduring icon of the bartending industry.
Research:

SYMHC Classics: COINTELPRO 1
39:12

Behind the Scenes Minis: It's Not Unprecedented
16:46

The Rendition of Anthony Burns, Part 2
43:32