1. Chart of the Arctic Ocean : illustrating the route of Peary's North Greenland expedition of 1891-'92 and other arctic expeditions Maps University Of Minnesota Public content 1892. National Geographic Society (U.S.). Depths shown by soundings.; On verso: "Peary's north Greenland expedition of 1891-92 : illustrated lecture by civil engineer R.E. Peary, U.S. Navy.... National Geographic Society (Washington, D.C).