A fascinating harbinger of U.S. participation in the International Geophysical Year (1957-58). One could only wish, sixty years later, that the Navy had distributed this work widely among its officers and men to help them understand what they were dealing with. The work consists of a series of timelines of polar expeditions, including in addition to the introductory chronologies, other sections on the Franklin Search, the Northwest Passage, the Northeast Passage. Part II includes two chapters on Antarctica, the second another timeline. Appendices include an Arctic index, a select bibliography, and a glossary.