NonFiction 3193 books on 4 CDs Author:Charles Darwin, Plato, Xenophon, Thomas Jefferson Our 3-CD Non-Fiction book collection has the full text of over 3100 books, including History, Natural Science, Social Science, Philosophy, and Reference. The classification makes it easy to find interesting books that you didn't know existed. These books are all old -- old enough to be in the public domain. So under flight, you won't b... more »e reading about the latest jets; but you could learn how to build and operate a plane from World War I or before. The books are all plain text files (not audio) organized for convenience and easy access. For best results, you shoud use it on a Windows PC with a Web browser and/or Word.« less