 The "Planar Handbook" was written by Bruce R. Cordell and Gwendolyn F.M.Kestrel, and was published in July 2004.Cover art was by Matt Cavotta, with interior art by Brent Chumley, Emily Fiegenschuh, David Hudnut, Dana Knutson, Doug Kovacs, David Martin, Dennis Crabapple-Martin, James Pavelec, Steve Prescott, Vinod Rams, and David Roach.