Inspecting the proposed hurricane barrier control structure on a model of Lake Pontchartrain a the U.S. Army Engineer waterway experiment station at Vicksburg, from left, H.B. Simmons, chief of the estuary section of the station; Gerald Gallinghouse, president of the Orleans parish levee board, and Colonel E.H. Lang, director of the waterways station.

Photo is dated 1961.

Photo measures 8.5 x 6.75 inches.