Lieut. Commander Henry E. Nichols, U. S. N., in command of the Coast
and Geodetic Survey steamer Hassler, made surveys in Alexander archipelago during three
seasons, 1881-1883. In 1881 he made surveys in Kaigani and Wrangell straits and magnetic
observations at various places. In 1882, from July 6 to November 20, his work was in and
about Revillagigedo channel and northward to Wrangell. In 1883, from May 16 to October 13,
he surveyed several harbors just north of Dixon entrance. He was relieved of his command by
Lieut. Commander A. S. Snow on March 6, 1884.
In 1888-1890 he again served in the Coast
Survey and wrote a revised edition of the Alaska Coast Pilot, which was published in 1891.
For an account of his work see Coast and Geodetic Survey Reports, 1882,
pp. 52-53; 1883, pp. 59-60; 1884, pp. 70-71; also Coast Survey charts 707, 709, 710, 713,
North Pacific Exploring Expedition, 1854-1855
Exploration and surveys were made in the North Pacific, Aleutian
islands, Bering sea, and on the Siberian coast by United States naval officers in 1854 and
1855. The expedition was under the command of Capt. Cadwalader Ringgold, U. S. N. Owing
to ill health be gave up the command to Capt. John Rodgers, who commanded the U. S. S.
Vincennes, while Lieuts. William Gibson and Beverly Kennon were on
the U. S. schooner Fenimore Cooper. The expedition is referred to as the North Pacific
Exploring Expedition and also as the Ringgold and Rodgers Exploring Expedition. The resulting
maps were published by the United States Hydrographic Office, but the journals exist only in
manuscript and no general account or report, so far as the writer knows, has ever been
published. See United States Hydrographic Office charts 8, 54, 55, 60, and 68.