San Diego entrance and approaches : California / from a trigonometrical survey under the direction of A.D. Bache, Superintendent of the Survey of the Coast of the United States ; by R.D. Cutts & Geo. Davidson, Assistants, and A.M. Harrison, Sub Assistant.
Relief shown by hachures; depths shown by soundings and isolines. Shows drainage, observatories, lighthouses, etc. "Redd. drng. by F. Herbst; engg. by S. Siebert, G. McCoy and E. Yeager." "Electrotype copy no. 2 by G. Mathiot, U.S.C.S." Soundings in fathoms Inset map: General sketch of San Diego Bay and Los Coronados. Scale 1:150,000. Includes text. Scale 1:25,000 (W 117?13?/N 32?41?).
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