The first message transmitted between two networked computers occurred on Oct 29th, 1969 at 2230 hrs. when Leonard Kleinrock and Charley Kline sent a LOG IN message from UCLA (Westwood, CA) to Stanford Research Institute (Menlo Park, CA).  Leon Kleinrock tells it like it was here.  NPR also produced a 'Lo' And Behold: A Communication Revolution tribute to the Internet's 40th Anniversary. Forty years.  Amazing.  The blink of an eye...

Happy Birthday to you, Internet!