A fun 1994 article about the first purchase on the web using encryption!
Phil Brandenberger uses his visa credit card, X-Mosaic and PGP to purchase a $12 'compact audio disk' by Sting.
It includes an explanation of the World Wide Web too :)
https://www.nytimes.com/1994/08/12/business/attention-shoppers-internet-is-open.html