The IMP Log: The Very First Message Sent on the Internet
Today, 29 October 2011, is the 42nd birthday of the Internet. This page from the IMP (Interface Message Processor) log from 29 October 1969 records the date and time of the very first message ever sent on the Internet, sent on 29 October 1969 at 22:30 Pacific Time from Boelter Hall 3420 at UCLA (this room is now the Kleinrock Internet Heritage site, which now contains the original equipment used to transmit the first messages on the Internet - after all, it literally is the birthplace of the Internet).
Today was also the grand opening of the museum, which I was present for. Charley Kline, who actually sent the very first message on the Internet (then the ARPANET), was there to tell the story of the first message ever sent on the Internet.
The The Kleinrock Internet Heritage Site and Archive will soon open to the public. If you'd like to learn more about the museum, click here.