Volumes of vintage science reference sets from non-smoking home. Dinosaurs has name inside front cover. No other writing found. Some One of the How It Works has staining on front cover. Pages are clean and unmarked. Includes a complimentary paper booklet. Please see all photos. Funk Wagnalls New Encyclopedia of Science 1986 Vol.1 (A-Aqu) pages 1-86 Vol. 20 (Tar-Uni) pages 1671-1758 Funk Wagnalls World of Dinosaurs and Other Prehistoric Animals - 1987 - 94 pages The New How It Works Illustrated Science and Invention Encyclopedia- 1989 Vol. 1 (Abom-Arch) 1989 Vol. 2 (Arch-Bell) 1983 The Illustrated Encyclopedia of Invention: Growing Up With Science Vol. 1 (Abom-Arch) - 1990 plus: Science in Action: 10 Projects You Can Do at Home - 16 pages I recycle packaging to save us both money. Shipping is for the the books wrapped in protective plastic/heavy paper sent Media Mail with tracking. I am happy to combine shipping (with any other listing). Please message me before payment.