Was D&D 50 Years Old on April 17? Maybe...

"According to Dave Arneson's Corner of the Table newsletter, Vol. III, #4"  "There will be a medevil "BRAUNSTEIN" April 17, 1971 at the home of David Arneson from 1500 hrs to 2400 hrs with refreshments being available on the usual basis. Players may come at any time and any number are welcome to attend what should prove to be an exciting time.  It will feature mythical creatures and a poker game under the Troll's bridge between sunup and sundown."   http://boggswood.blogspot.com/2021/04/the-first-pc-to-die-ever.html