1) Alfred Hitchcock and the Three Investigators in The Mystery of the Fiery Eye by Robert Arthur, 1967 Random House; 182 pgs, all clean, save for three latter pgs that have evidence of folds; some wear and creasing of the cover 2) Alfred Hitchcock and the Three Investigators in The Mystery of the Flaming Footprints by M.V. Carey, 1971 Random House; 202 pgs, all clean; minimal wear to cover; does not appear to have been opened