Authentic Thaumaturgy by P.E.I. Bonewitz.
100pp Book with card cover.
Published in 1978 by Chaosium Inc., Albany, California.
Republished (2nd Edition) in 1979 by Chaosium Inc., Albany, California.
Later re-published by Steve Jackson Games.
Sourcebook of ideas for improving the realism of magic systems within role-playing games, and the first book to offer improvements to the Dungeons & Dragons magic system. Image courtesy of Randall Stukey.
