Searching for the North Pole
Photograph by Admiral Robert E. Peary
Robert E. Peary documented his 1909 trip to the North Pole with a No. 4 Folding Pocket Kodak. Though the camera was lost, images taken with it were used by the National Geographic Society in 1989 to determine that Peary's claim of reaching the Pole, the subject of controversy since the day he made it, was valid. In this photo, Peary scouts the Arctic terrain using a telescope.
Learn more and buy the book: 100 Days in Photographs: Pivotal Events That Changed The World.