Stamped : 'Approved (Signed) A. Maguire, Assistant Chief Engineer.' In lower right corner: '6-W-74.' Some annotations written over in yellow; black dotted line added between forebay and final spring in the northwest. Scale [ca. 1:6,000] 1 in.=500 feet
From the Howard Cannon Photograph Collection (PH-00192). Stamped on verso: "Official U.S. Marine Corps Photograph Combat Information Bureau No. 111 Marine Amphibious Force, BMF FPO San Francisco, Calif. 98601"