Life magazine
US Army document World War I Fortifications of the Panama Canal - Historical Marker (Battery NEWTON)
US Army document World War I Fortifications of the Panama Canal - 14-Inch DC Gun Emplacement (Battery BUELL)
US Army document World War I Fortifications of the Panama Canal - Ammunition Cart (Battery MORGAN)
US Army document World War I Fortifications of the Panama Canal - Battery MORGAN -- 1939
US Army document World War I Fortifications of the Panama Canal - Battery MORGAN -- 1965
US Army document World War I Fortifications of the Panama Canal - Railway Gun Position -- Fort Randolph
US Army document World War I Fortifications of the Panama Canal - Jungle Encroaches on Battery STANLEY
US Army document World War I Fortifications of the Panama Canal - 12-Inch Mortar Emplacement (Battery BAIRD)
US Army document World War I Fortifications of the Panama Canal - Battery KILPATRICK
US Army document World War I Fortifications of the Panama Canal - Battery MACKENZIE
US Army document World War I Fortifications of the Panama Canal - Fort Amador -- 1915
US Army document World War I Fortifications of the Panama Canal - Battery WARREN
US Army document World War I Fortifications of the Panama Canal - Batteries MERRITT, PRINCE, and CARR -- 1939
US Army document World War I Fortifications of the Panama Canal - Batteries MERRITT, PRINCE, and CARR -- 1965
US Army document World War I Fortifications of the Panama Canal - Battery NEWTON
US Army document World War I Fortifications of the Panama Canal - Section of l6-Inch Gun Muzzle, Battery NEWTON
US Army document World War I Fortifications of the Panama Canal - Battery BURNSIDE
US Army document World War I Fortifications of the Panama Canal - Culebra Island -- 1913
US Army document World War I Fortifications of the Panama Canal - l6-Inch Barbette Carriage Rifle -- 1939
US Army document World War I Fortifications of the Panama Canal - No. 2 Casemate, Battery MURRAY
US Army document World War I Fortifications of the Panama Canal - NO. 1 Gun Position, Battery HAAN
US Army document World War I Fortifications of the Panama Canal - Battery HOWARD, Range Indicator
US Army document World War I Fortifications of the Panama Canal - Fields of Fire -- Atlantic Coast Artillery
US Army document World War I Fortifications of the Panama Canal - Fields of Fire -- Pacific Coast Artillery
US Army document World War I Fortifications of the Panama Canal - Coast Artillery Batteries --Colon and Fort Randolph
US Army document World War I Fortifications of the Panama Canal - Coast Artillery Batteries --Fort Sherman
US Army document World War I Fortifications of the Panama Canal - Coast Artillery Batteries --Fort Amador,Fort Grant, and Fort Kobbe
US Army document World War I Fortifications of the Panama Canal - Batteries BIRNEY and SMITH
US Army document World War I Fortifications of the Panama Canal - Fort Grant
US Army document World War I Fortifications of the Panama Canal - TYPICAL EMPLACEMENT for 14-Inch Disappearing Carriage Rifle
