[ih] First ARPANET Link Put Into Service: November 21, 1969

[Steve Crocker]

After seeing the back and forth on this thread, I now think 21 Nov 1969 was when Larry Roberts came to UCLA.  I'll try to check with Kleinrock.

Steve

Sent from my iPhone

> On Nov 23, 2025, at 3:48 PM, Jack Haverty via Internet-history <internet-history at elists.isoc.org> wrote:
> 
> Perhaps someone in the Bay Area can go to CHM and ask what actually happened on November 21, 1969...?   /Jack
> 
>> On 11/23/25 12:22, Barbara Denny via Internet-history wrote:
>>  Here is Don Nielson's response to my inquiry.  I did cut out the first paragraph as it only was for me. There is a typo regarding the 1972 ICC meeting.
>> barbara
>>    ----- Forwarded Message ----- From: Don Nielson <nielsonz at pacbell.net>To: Barbara Denny <b_a_denny at yahoo.com>Sent: Friday, November 21, 2025 at 10:05:40 PM PSTSubject: Re: Fw: [ih] First ARPANET Link Put Into Service: November 21, 1969
>>  "*** paragraph deleted*****
>>    I'm certain about the following:
>>    1.  First ARPANET connection - Between Bill Duvall at SRI and Charlie Kline of UCLA
>>      on what has been accepted as 29 Oct 1969.  I tried my best to confirm the date
>>      while this date was being pushed by Len Kleinrock of UCLA. Even I and Marc Weber
>>      the CHM dug into Engelbart's dinky handwritten notebooks and other stuff on file at
>>      Stanford. As far as we could tell, nothing was noted on the SRI end, indicating no big
>>      deal at the time.  So, what has come to be accepted derives from a brief jot on Charlie's
>>      scratchpad:  "22:30  Talked to SRI Host to Host". Charlie and Bill are still around
>>      and have confirmed and elaborated on the incident, being quoted in some places.
>>  2. ARPANET demo at the International Computer Communication Conference in WDC
>>      of NCP in Oct 19723.
>>  3. First 2-net demo of TCP was on 27 Aug 1976.  PRNET and ARPANET.
>>  4. First 3-net demo of TCP was on 22 Nov 1977.  PRNET, SATNET, and ARPANET.
>>    All this is easily available so 21 Nov 1969 seems an aberration by someone.
>>  Take good care,  Don
>>      On 11/21/25 10:14 AM, Barbara Denny wrote:
>>       Hi Don
>>   Hope you are doing well.  This came up on the internet history list.  I am wondering if you could shed some insight on the log.
>>   Hope you have a good holiday.
>>   barbara
>>     ----- Forwarded Message ----- From: Vint Cerf via Internet-history <internet-history at elists.isoc.org> To: Jack Haverty <jack at 3kitty.org> Cc: "internet-history at elists.isoc.org" <internet-history at elists.isoc.org> Sent: Friday, November 21, 2025 at 09:50:33 AM PST Subject: Re: [ih] First ARPANET Link Put Into Service: November 21, 1969
>>    crocker and I were wondering the same thing off the list.
>>  v
>>      On Fri, Nov 21, 2025 at 12:49 PM Jack Haverty via Internet-history <
>>  internet-history at elists.isoc.org> wrote:
>>    > Can anyone explain why the article says "What Happened on November 21st"
>>  > but the image of the "First ARPANET IMP log" shows "29 OCT"? /Jack
>>  >
>>  > On 11/21/25 09:37, vinton cerf via Internet-history wrote:
>>  > > there are so many milestone dates....
>>  > >
>>  > > v
>>  > >
>>  > >
>>  > >
>>  > > On Fri, Nov 21, 2025 at 12:03 PM Frantisek Borsik via Internet-history <
>>  > > internet-history at elists.isoc.org> wrote:
>>  > >
>>  > >> Happy birthday to the Internet!
>>  > >>
>>  > >> https://www.computerhistory.org/tdih/november/21/
>>  > >>
>>  > >> All the best,
>>  > >>
>>  > >> Frank
>>  > >>
>>  > >> Frantisek (Frank) Borsik
>>  > >>
>>  > >>
>>  > >> *In loving memory of Dave Täht: *1965-2025
>>  > >>
>>  > >> https://libreqos.io/2025/04/01/in-loving-memory-of-dave/
>> 
>>          
> 
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