Photograph of a map with white lines on a black background with a woven texture. The map is titled, "Improvement of Oakland Harbor, California." Text at upper left reads, "MAP / illustrating in blue the project approved by the Secretary of War November [4th] 1878 and in re[illegible] the area covered by the resolutions of the Oakland Water Front Company passed July 12th 1879. / Accompanying letter dated July 16th 1879. / [illegible signature] / Lt. Col. Corps of Engineers." The area is bound by Yerba Buena Island at bottom left, Alameda at lower right, and Oakland at top. "Commercial Studios / Photographers / M. L. Cohen Co. / GL. 1-9717 / 1116 Franklin St. / Oakland, - California" stamped in ink on verso.