1973 ARPA network map.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...p_fullsize.jpg
More:
https://en.wikipedia.org/wiki/ARPANET
Previously:
Cleaning an underwater data center - GIF
Sending and receiving emails in the 1980s - photo
Internet browsing keyboard for the blind - GIF
Taking screenshots in the 1980s - photo
Bookmarks