Email Record: Upper part of 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 & topography by R.D. Cutts & A.F. Rodgers, assts., Coast Survey ; hydrography by the parties under the command of Commander James Alden & Lieut. Comdg. R.M. Cuyler, U.S.N. assts.