Lot of 3 National Geographic Books for Young Explorers Sea Life Dolphins Whales Treasures in the Sea 1972 - Has slight water damage in the upper outside corner of the pages. Wear to front and back covers. The Playful Dolphins 1976 - Wear to front and back covers. The Blue Whale 1977 - Wear to front and back covers. These are used books, there may be imperfections that I did not see.