2nd Edition 1950. Includes a 1951 signed and typed letter from the author. The letter mentions Hornells Expedition. This book contains the account of the famous expedition of Thor Heyerdahl (1914 2002), a Norwegian explorer who wanted to prove the South-American origin of Polynesian people by building a raft and then sailing from Peru to Tahiti. This expedition was a success and started a new branch of studies in anthropology. Book is very good++ and bright.Contents good. The wrapper is very good+ and quite bright. Edges lightly rubbed and nicked. Small loss to spine tips.