The ice age in North America and its bearing upon the antiquity of man. 5th ed. With many new maps and illus. , enl. And rewritten to incorporate the facts that bring it up to date, with chapters on Lake Agassiz and the Probable cause of glaciation. This book, "The ice age in North America and. its bearing upon the antiquity of man. 5th ed.", by G. Frederick Wright, is a replication of a book originally published before 1911. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.