Map showing expeditions through Bering Strait and into the Asiatic and American
Ice Sea (present day Chukchi and Beaufort Seas. Map shows expedition
routes of various explorers from 1648-1867. Depths in fathoms. Curiously
significantly more sounding information on this map than the contemporaneous
Kara Sea map shown in map00349. Published in Petermann's Geographische 1869.