John Romero's planet rome.ro describes a vintage video called A Visit to id Software on Vimeo that John got from Joe Siegler at 3D Realms as a VHS tape (ask your grandparents) of a visit to id Software back in 1993. Word is: "In 1993, Dan Linton, owner of a hugely successful BBS called Software Creations, visited Texas and made his way to id Software. This is the footage he recorded one night in November 1993. Shown are several of id's employees at the time: Jay Wilbur, Shawn Green, John Romero, Dave Taylor, Sandy Petersen and Adrian Carmack, Bobby Prince was visiting to finish the music and create the sound effects. This video has 21 minutes of me playing DOOM before the sound effects were put in as well as some early deathmatching with Shawn Green." Thanks Redwood.