I didn't see where anyone posted about this. It's the 18th Annual Maynard Sundman Lecture, at the Smithsonian National Postal Museum: The Origins, Birth and International Reach of the Postage Stamp through 1847, James L. Grimwood-Taylor, M.A., R. D. P.
Tuesday, December 7, 2021 at 4 pm EST. Online, via Zoom
Here's a link: https://postalmuseum.si.edu/maynard...cture-series
I don't know how many attendees are allowed, but I was able to register.