Designers & Dragons: The '70s

A recent kickstarter success, this is the first volume in the expansion of Appelcine's definitive history to a full four volume set - each volume focused on a decade in the history of roleplaying games, and the companies that were founded during that decade.
This first volume, focusing on the 70's and the initial birth of roleplaying games, is worth the price of admission alone. Included in this volume are companies and individuals that are well known to all fans of early roleplaying - TSR, GDW, Judge's Guild, Chaosium, Gary Gygax, Dave Arneson, Marc Miller. The facts are meticulously well researched and supported by primary sources collected and contacted over years, and the stories inside are a fascinating look at the games that redefined popular culture for generations of imaginative gamers.
This book has my highest recommendation.