Today detailed reports from game sessions are common. Until recently, some of the oldest I knew of were to be found in Alarums & Excursion...| boggswood.blogspot.com
If you want to find the details for one of the characters that Gary Gygax made and played as a PC, perhaps to use as an NPC in your own game, it isn't terribly difficult. Likewise for the characters of Rob Kuntz, David Megarry Greg Svenson and others among the early developers and players of D&D.| Hidden in Shadows