Astro-Calendar: 2020 July / 50 Years of Video CallingBlog-Post: 50th anniversary of commercial video telephone service.MORE INFORMATION: CLICK ON IMAGE OR LINK --- LIKE THIS POST? PLEASE SHARE!Link >>> https://spacewatchtower.blogspot.com/2020/07/astro-calendar-2020-july-50-years-of.html Calendar: Link >>> http://buhlplanetarium4.tripod.com/astrocalendar/2020.html#jul | | | | | | | | | | | Astro-Calendar: 2020 July / 50 Years of Video Calling July 1 marks the 50 th anniversary of commercial video telephone service. It was on that date in 1970 that serv... | | | gaw Want to receive SpaceWatchtower blog posts in your inbox ? Send request to < [log in to unmask] > Glenn A. Walsh, Informal Science Educator & Communicator, Friends of the Zeiss < http://friendsofthezeiss.org > Electronic Mail - < [log in to unmask] > SpaceWatchtower Blog: < http://spacewatchtower.blogspot.com/ > ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).