A Pioneering Single Mom Created Liquid Paper, and It’s Been Fixing Typos for 60 Years Now

Bette Nesmith Graham was in a terrible fix. It was 1954, and the Texas Bank and Trust, where she worked as a secretary, had just replaced its old manual typewriters with new IBM electrics. Graham had never been a great typist in the first place, and the IBM machines' feather-touch keys caused her to make...