Blackstone, Harry. Three Volumes, One Signed by Blackstone, One Signed by Walter Gibson. Including The Great Blackstone’s Secrets (Oak Park, Ill., ca. 1920; inscribed and signed by Blackstone on the inside cover); Blackstone’s Magic (New York, 1929; inscribed and signed by Walter Gibson on title page); and Easy Magic for Everyone (Chicago, ca. 1919; ownership signature of the publisher, Arthur P. Felsman). Color wrappers, latter staple-bound. 8vo.