Bing:
I have all the stuff ready for you, but the last listing was for the 2015 Annual Meeting talk by Lett. Lett states that 1919 was the date at time stamps, 15 to 16 minutes into the talk.
I would need to send all this stuff to you with a download link. That portion of the Annual Meeting is over an hour long, so it will be a little large in size.
Atlantis!