Mokelumne, CA: Health Research, .
[v], 1-11, 12a, 12-59, 7 pp. Bound in publisher's side-stapled yellow wraps. Reprint, publisher's ads at rear dated January 1980. Contains some underlining and checkmarks in margins in pencil, else Very Good. A long essay by one of the better-known 20th century proponents of hollow earth theory and UFOs. Item #140944401