A professor at Keene State College in New Hampshire and author of several books (among them, Earth's Shifting Crust) Charles H. Hapgood makes a case here for an advanced civilization in the Ice Age. He draws his conclusions from ancient maps, which he and his students have undertaken to study and analyze. Among them is the World Map of Piri Re'is, dated 1513, which appears to have source maps dating back to the time of Alexander the Great. There is the Oronteus Finaeus Map of 1531, showing fjords and rivers where the glaciers now stand in Antartica, a Turkish World Map of 1559 denoting a land bridge connecting Alaska and Siberia, Mercator's map of Antartica, etc., etc. Professor Hapgood reviews the scientific implications of the maps and makes a leap into the unknown with his view that they indicate the possiblity of a Vanished super-civilization. Whether or not one is convinced, the study of the maps for the scientifically oriented should have its own fascination. Appendices include mathematical analyses and geographical tables. More than 100 illustrations in black and white and in color (not seen here). The going is close, and this is for the reader actively interested in scientific brushbeating.