NY: Albert & Charles Boni, 1930. First trade edition. Ix, 239pp. 8vo. Black cloth stamped in red on front board and spine; lacking the jacket. Some splitting to gutters, else very good; a clean, attractive copy.
A non-fiction work by the American author of The Jungle, Oil!, and other novels; details a series of (semi-conclusive) tests Sinclair administered on his second wife, Mary Craig Sinclar, to try and prove the existence of her clairvoyant abilities.
