Depths shown by soundings. Polar projection. Depths shown for Bering Sea only. "Published according to act of Parliament by Capt. Hurd, R.N., Hydrographer to the Admiralty, 14th. Feby. 1818."
United States atlas: maps and charts accompanying the case and counter case of the United States, by the Alaskan Boundary Tribunal, and published by the United States Government Printing Office, Washington, D.C., 1904.