Includes sailing directions and notes describing the islands of the Aleutian chain. Relief shown by hachures and spot heights; depths shown by soundings. At head of title: Pacific Surveying Expedition, Lieutenant John Rodgers commanding. ...
Includes profiles of Wrangell Island, St. Paul's Island and Ugomok Island. Relief shown by hachures and spot heights; depths shown by soundings. "Drawn by Louis Waldecker." Corrected to 1891. "Additions and corrections, in 1889, by the...