US Coast and Geodetic Survey

Schiffer. 1973. OCLC 38286714.  U.S. Coast and Geodetic Survey. Report of the Superintendent of the U.S. Coast and Geodetic Survey Showing the Progress of the

在德奎島西方約3公里處，有一座頂點於海平面以下24公尺的山 。 島嶼距離沃荷斯島約0.5公里，相距臺灣蘭嶼大約200公里左右。 U.S. Coast and Geodetic Survey, "United States Coast Pilot, Philippine Islands, Part I", p.40. Washington

E. W. Eickelberg, Lituya Bay, Gulf of Alaska. U.S. Coast and Geodetic Survey FIELD ENGINEERS BULLETIN no. 10, December 1936（页面存档备份，存于互联网档案馆）

Retrieved March 12, 2016 Department of Commerce, U.S. Coast and Geodetic Survey, "United States Coast Pilot, Part 1", p. 203. Washington Government Printing

Captain (retired). A Geodetic Measurement of Unusually High Accuracy (PDF). U.S. Coast and Geodetic Survey Journal (Coast and Geodetic Survey). April 1949: 68–74