Preliminary Chart of San Luis Pass ;from a Trigonometrical Survey under the direction of A.D. Bache Superintendent of the Survey of the Coast of the United States ; Triangulation by James S. Williams ; Topography by J. M. Wampler ; Hidrographi by the Party uunder the command of H.S. Stellwagen ; Redd. Drng. by Freyhold; Engg. by E. Yeager & App. J.J. Knight ;