BACK TO WHERE IT BEGAN
A compendium that explores the history of the original release
The book The Making of Original Dungeons & Dragons: 1970-1977 is a hugely detailed and lavishly mounted volume that collates archival documents taking you right back to the genesis of the game. If you want to read the earliest notes Dave Arneson and Gary Gygax compiled as they worked out quite what their D&D world could be, then this is the book for you.