Set of 12 books by adventure novelist Clive Cussler Clive Cussler was the founder and chairman of the National Underwater and Marine Agency (NUMA), which has discovered more than 60 shipwreck sites as well as a best-selling author of 80+ books. Most of his novels feature hero Dirk Pitt. Like Clive, Dirk makes numerous shipwreck discoveries but also manages to thwart countless plans by villains who are intent on global catastrophe or world domination. Titles are: Sahara Inca Gold Arctic Drift Black Wind Fire Ice Atlantis Found Flood Tide Trojan Odyssey Shock Wave Treasure Cyclops Dragon Books are in various conditions. There are no missing pages, spines are intact, no writing in text and no rips or tears of text. There may be writing or stickers on the endpapers. One book has no jacket. But overall, the books are in great condition. Cross-posted.