Jedera Adventure Author:Lloyd Alexander Returning a library book is simple-unless the library is in North Africa and the book is Vesper Holly's! She organizes a library-bound caravan, deals with feuding desert tribes, rough terrain, and slave traders-but then is faced with the evil Dr. Helvitius. . . . — "In addition to being solid entertainment, the [Vesper Holly] books have the power... more » to create a host of well-informed armchair travelers."