No work revealed more of the mysterious East to statesmen, explorers, readers, and writers of the late Middle Ages than the Book of John Mandeville. One of the most widely circulated documents of its day, it first appeared in French between 1356 and 1371 and was soon translated into nine other European languages. Ostensibly the account of one English knight's journeys through Africa and Asia, it is, rather, a compilation of travel writings first shaped by an unknown redactor.

Writing East is a study of how Mandeville's Travels came to appear in its various...