This version of Dungeons and Dragons was authored by Gary Gygax between 1977 and 1979 as a complete rewrite of the full set of the original Dungeons and Dragons rules, with an eye towards resolving inconsistencies and presenting a canonical form of the game.
Called Advanced Dungeons & Dragons, or AD&D, it is now commonly called "1st Edition".
Growing up playing D&D in the '70s, I was obsessed with creating the "perfect" character sheet. The official ones put out by TSR at the time were a wee bit disappointing, and I thought I could do better, even with the crude tools I had on hand (and IBM Selectric and press type).
Fast forward to now — every four or five years, a few friends and I will trundle out our old AD&D books to play for an afternoon. Recently, before we got together, I sat down with Photoshop and put together the ultimate player character sheet: that is to say, the one my 14-year-old self wanted all those adventures ago. It is based on one of the old TSR sheets, but fine-tuned with decades worth of design and gaming experience. Merry Christmas!
Random monster encounter charts featuring all the dungeon appropriate (i.e. no aquatic, sylvan, etc.) creatures listed in the 1st Edition Advanced Dungeons and Dragons Monster Manual, Fiend Folio, and Monster Manual II.