This set, written by Raymond Abrashkin and Jay Williams, is in good shape. The box has many creases and wear, from age. The books have minor yellowing and wear. One book has staining on its pages. (See photo) Titles included are: Danny Dunn and the Swamp Monster (1971) Danny Dunn and the Anti-Gravity Paint (1956) Danny Dunn, Time Traveler (1963) Danny Dunn on the Ocean Floor (1960) Danny Dunn and the Weather Machine (1959) My home is smoke free, and cat & dog friendly. I do same day shipping, depending on the time of order. Open to Offers!