Mare Island Straits, California. U.S. Coast Survey, A.D. Bache, Superintendent. Triangulation by J.S. Williams and R.D. Cutts, assts., U.S.C.S. and Lt. S.F. Blunt, U.S.N., Joint Commn. Army & Navy officers. Topography by R.D. Cutts, asst., U.S.C.S. Hydrography by the party under the command of W.P. McArthur, Lieut U.S.N. and asst. U.S.C.S. 1851.