An interesting analysis of Olympic logos (original page: https://eyeondesign.aiga.org/milton-glaser-analyzes-olympic-logo-design-through-the-ages/) from a design standpoint, by the guy who developed the "I [Heart] NY" logo.
While I don't agree with everything he has to say, by and large I do. A lot of them, older and more modern, come across as design-by-committee, which rarely ends well.
Milton Glaser Rated Every Olympics Logo Ever. This Was His Favorite | WIRED
Barcelona is still my fave
Worth putting here:
http://www.westword.com/news/how-a-citizen-revolt-snuffed-the-1976-denver-winter-olympics-8004153