Entrance to San Francisco Bay, California : from a trigonometrical survey under the direction of A.D. Bache, Superintendent of the Survey of the Coast of the United States ; triangulation by R.D. Cutts, Asst. & A.E. Rodgers, Sub-Asst. ; topography by R.D. Cutts, Asst., A.M. Harrison & A.F. Rodgers, Sub-Assts. ; hydrography by the party under the command of Lieut. Comdg. James Alden, U.S.N. Assist.
