California. Department of Fish and Game. Marine Resources Region. This line shapefile represents California's offshore islands. This layer is part of a collection of data created by the California Department of Fi... California. Department of Fish and Game. Marine Resources Region.
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F.M. Thorn, superintendent ; verified B.A. Colonna, assistant in charge of Office. "Issued June 1886." Relief shown by hachures and shading; depths... The Survey.
U.S. Coast and Geodetic Survey. Relief shown by hachures and spot heights; depths shown by soundings and isolines. Includes view, tides table, and notes. "U.S.C. & .G.S. 5126.". U.S. Coast and Geodetic Survey.