Content description:
Photograph of a map titled, "San Francisco Bay." Text at top right reads, "U.S. Coast Survey / A D Bache Supdt / San Francisco Bay / Contra Costa / No V / Scale 1/10,000 / [illegible] 360 / Date of survey, 1852." A document from the Department of Commerce with a circular seal is taped to the top left corner of the map. The document is signed on January 18, 1934 by J.H. Hawley, the Assistant Director of the U.S. Coast and Geodetic Survey, and by [E W Sibbey], the Acting Assistant, Secretary of Commerce. "Commercial Studios / Photographers / M. L. Cohen Co. / GL. 1-9717 / 1116 Franklin St. / Oakland, - California" stamped in ink on verso.