Smells like OD&D to me.

ROCHESTER, New York—A rare manuscript believed by some experts to be the earliest existing version of Dungeons & Dragons will be prominently displayed at the National Museum of Play at The Strong^® beginning April 13 as part of Game Time!, a major exhibit exploring 300 years of games, puzzles, and public amusements.

See the rest at:

http://www.thestrong.org/press/releases/2013/04/4538-rare-dungeons-dragons-manuscript

And, for more images and info:

http://www.examiner.com/article/is-this-manuscript-the-first-version-of-dungeons-dragons?goback=.gde_36454_member_232574636