This book contains the definitive analysis of the navigation and achievement of the discovery of the North Pole by Robert Peary and Matthew Hensen in April of 1909. The report is the work of members of the Foundation for the Promotion of the Art of Navigation. It was commissioned by the National Geographic Society in 1989 to resolve the controversies surrounding this achievement once and for all. "I consider this the end of a historic controversy and the confirmation of due justice to a great explorer." - Gilbert M. Grosvenor, President National Geographic Society