Fans of Castle Greyhawk will find Matt Bassil's latest article, "Castle Greyhawk, the lost dungeon that kicked off Dungeons & Dragons, still inspires players today" of interest: https://www.syfy.com/syfywire/dungeons-dragons-castle-greyhawk-lost-dungeon
I was interviewed for the piece, along with Rob Kuntz, Bill "stratochamp" Meinhardt, and Patrick Wetmore of Anomalous Subsurface Environment fame!
Allan.