Fort Pickens, Fla., [and vicinity]. Showing the positions and strength...
"Fortifications Map File" Plans of Military Forts
The Comets Observation
Berryman Political Cartoon Collection
Observer mounting into an observation balloon
British Photographs of World War I
Artillery observation post (British) during the Mesopotamian Campaign
British Photographs of World War I
Former German observation post now used by the British. ST. Eloi
British Photographs of World War I
Gen. Douglas (British Army) watching movements of the enemy and direct...
British Photographs of World War I
King George leaving an observation post on Vimy Ridge. 7-11-1917
British Photographs of World War I
Turkish observation post captured by the British during the Mesopotami...
British Photographs of World War I
Cleverly camouflaged German observation station at La Bassee. Ypres Sa...
British Photographs of World War I
A German concrete machine Gun position and observation post built to r...
British Photographs of World War I
British observation post during Mesopotamian Campaign
British Photographs of World War I
Scene at a British observation post on the Italian Front
British Photographs of World War I
Disabled tank used as an observation post. Near Ribecourt, France. 11-...
British Photographs of World War I
Former German observation post. ST. Eloi
British Photographs of World War I
Observer jumping from an observation balloon. Near Metz, France. 1-25-...
British Photographs of World War I
View taken from an abandoned German observation post during the Ypres ...
British Photographs of World War I
Ladder leading to an observation station in a tree top. Near Cambrai, ...
British Photographs of World War I
Balloons - Flights - Balloons. Observation balloon rising
Balloons - Flights
Observation post at a command post on the Western front
German Military Activities and Personnel
Ceremonies - Liberations - Naturalization Ceremonies - Naturalization ...
Date Taken: 6/12/1918 Photographer: Intelligence Office Ceremonies - Liberations - Naturalization Ceremonies
Balloons - Flights - Observation Balloon of 31st Balloon Co., West Poi...
Photographer: Mr. M.E. Tamme, Louisville Balloons - Flights
Airplanes - Miscellaneous - Keeping tabs of Army fliers. This man is s...
Date Taken: 1917 Photographer: International Film Service Airplanes - Miscellaneous
Airplanes - Types - De Havilland 9 - observation - British. Upper) De ...
Photographer: Signal Corps - U.S.A. Airplanes - Types
Balloons - Observation - Hauling an observation balloon into position
Balloons - Observation
Balloons - Observation - Hauling observation balloon into position
Balloons - Observation
Western front. The arrival of a messenger dog with a carrier pigeon at...
German Military Activities and Personnel
Western front. The arrivl of a messenger dog with boxes of carrier pig...
German Military Activities and Personnel
Balloons - Flights - Balloons. Releasing observation balloon
Balloons - Flights
Balloons - Observation - Balloon at Camp Eustis, Virginia
Balloons - Observation
Balloons - Observation - Balloons. Observation balloon about to ascend
Balloons - Observation
Balloons - Flights - Observation Balloon at a Camp in the United State...
Photographer: M.E. Tamme Balloons - Flights
Balloons - Observation - Omaha Balloon School. Omaha, Nebraska. Observ...
Photographer: Underwood & Underwood Balloons - Observation
Balloons - Flights - Observation balloon makes demonstration flight fo...
Date Taken: 3/18/1919 Photographer: Underwood & Underwood Balloons - Flights
Balloons - Observation - Hauling an observation balloon fro the hangar...
Balloons - Observation
Balloons - Flights - Observation Balloon
Balloons - Flights
Balloons - Flights - Observation Balloon of 31st Balloon Co., West Poi...
Photographer: Mr. M.E. Tamme, Louisville Balloons - Flights
Balloons - Flights - Observation Balloon, from underneath
Photographer: C.P.I. Balloons - Flights
Balloons - Hangars and Beds - Hauling an observation balloon from hang...
Balloons - Hangars and Beds
Balloons - Observation - Balloons. Releasing observation balloon
Balloons - Observation
Balloons - Observation - Observation Balloon at a camp in the United S...
Photographer: M.E. Tamme Balloons - Observation
Balloons - Flights - Observation balloon rising
Balloons - Flights
Western front. Men with breast plates on observation post in an advanc...
German Military Activities and Personnel
Balloons - Observation - Taking an observation balloon from hangars
Balloons - Observation
Balloons - Flights - Balloons. Observation balloon ascending
Balloons - Flights
Balloons - Flights - Hauling an observation balloon into position
Balloons - Flights
Airplanes - Types - Airplane Types. LOWER: Pomilio E - observation - I...
Photographer: Signal Corps - U.S.A. Airplanes - Types
Balloons - In the Theatre of Operations - Types of ordnance. In and be...
Photographer: Eng. Div. Ord. Dept. Balloons - In the Theatre of Operations
Balloons - Equipment - Hauling an observation balloon into position
Balloons - Equipment
Balloons - Observation - Balloons. Releasing observation balloon
Balloons - Observation
Balloons - Observation - Balloons. Observation balloon about to ascend
Balloons - Observation
Balloons - Flights - Observation Balloon at a Camp in the United State...
Photographer: M.E. Tamme Balloons - Flights
Balloons - Observation - Rear view of observation balloon
Photographer: International Film Service Balloons - Observation
Balloons - Equipment - Omaha Balloon School, Omaha, Nebraska. Trucks f...
Photographer: Underwood & Underwood Balloons - Equipment
Ceremonies - Salutes and Parades - New York - Great parade of 27th Div...
Date Taken: 3/25/1919 Photographer: Underwood & Underwood Ceremonies - Salutes and Parades - New York
Camouflage - Buildings - Camouflaged gun positions. American gun posit...
Photographer: Junius Wood Camouflage - Buildings
Balloons - Flights - Descending from a Naval observation balloon in ro...
Photographer: Press Illus. Ser. Balloons - Flights
Balloons - Schools - Balloon School at Lee Hall, VA. View of observati...
Date Taken: 08/0/1918 Photographer: International Film Service Balloons - Schools
Balloons - Flights - Observation Balloon of 31st Balloon Co., West Poi...
Photographer: Mr. M.E. Tamme, Louisville Balloons - Flights
Balloons - Observation - Balloons. Bringing an observation balloon fro...
Balloons - Observation
Balloons - Flights with Ships in View - The observation balloon on U.S...
Photographer: C.P.I. Balloons - Flights with Ships in View
Airplanes - Historical - Flying above the clouds. Taken from an observ...
Photographer: Underwood & Underwood Airplanes - Historical
Airplanes - Types - Airplane Types. LOWER: S. A. M. L. (Societa Anonim...
Photographer: Signal Corps - U.S.A. Airplanes - Types
Balloons - Observation - Balloons. Inflating Observation Balloon
Balloons - Observation
Balloons - Flights - British Balloon observer ready to make an ascensi...
Photographer: Kadel & Herbert Balloons - Flights
Balloons - Observation - Scene at Balloon School showing hangar and ob...
Photographer: International Film Service Balloons - Observation
Balloons - In the Theatre of Operations - Battle of Menin Road. A Brit...
Date Taken: 6/23/1918 Photographer: International Film Service Balloons - In the Theatre of Operations
Behind the Western front. Long range cannon camouflaged against observ...
German Military Activities and Personnel
Airplanes - Types - Observation Planes
Date Taken: 1918 Airplanes - Types
Balloons - Flights with Ships in View - Observation balloonon Battlesh...
Photographer: Underwood & Underwood Balloons - Flights with Ships in View
Western front. The arrival of a messenger dog with boxes of carrier pi...
German Military Activities and Personnel
Balloons - Observation - Types of American Dirigibles and balloons in ...
Photographer: International Film Service Balloons - Observation
Balloons - In the Theatre of Operations - Italian Observation Balloons...
Photographer: Helen W.J. Kirtland Balloons - In the Theatre of Operations
Balloons - Observation - Observation Balloon of 31st. Balloon Co., Wes...
Photographer: Mr. M.E. Tamme, Louisville Balloons - Observation
Balloons - Hangars and Beds - Observation Balloons of 31st. Balloon Co...
Photographer: Mr. M.E. Tamme, Louisville Balloons - Hangars and Beds
Balloons - In the Theatre of Operations - Making fast a British Observ...
Photographer: Kadel & Herbert Balloons - In the Theatre of Operations
Balloons - Schools - Balloon School at Lee Hall, VA. View of observati...
Date Taken: 08/0/1918 Photographer: International Film Service Balloons - Schools
Balloons - Observation - Balloons. Releasing an observation balloon
Date Taken: 08/0/1918 Photographer: International Film Service Balloons - Observation
Balloons - In the Theatre of Operations - How an observation balloon c...
Photographer: Underwood & Underwood Balloons - In the Theatre of Operations
Balloons - In the Theatre of Operations - Observation balloon of the G...
Photographer: C.P.I., Washington, D.C. Balloons - In the Theatre of Operations
Balloons - Observation - Observation Balloon of 31st. Balloon Co., Wes...
Photographer: Mr. M.E. Tamme, Louisville Balloons - Observation
Balloons - Observation - Inflation of observation balloon
Balloons - Observation
Balloons - Observation - Lee Hall, VA., Balloon School. Unusual view o...
Photographer: International Film Service Balloons - Observation
Balloons - Observation - Balloons. Observation balloon watching over D...
Balloons - Observation
Balloons - Observation - Hauling an observation balloon into position
Balloons - Observation
Balloons - Flights - Observation Balloon of 31st Balloon Co., West Poi...
Photographer: Mr. M.E. Tamme, Louisville Balloons - Flights
Balloons - Observation - Balloons. Observation balloon about to ascend
Balloons - Observation
Balloons - Miscellaneous - An observation balloon, Polo Grounds, Washi...
Photographer: C.P.I. Balloons - Miscellaneous
Balloons - Observation - American Dirigible. New type of dirigible for...
Date Taken: 10/0/1918 Photographer: International Film Service Balloons - Observation
Neutral military attaches in a visit to a combat squadron on the Piave...
German Military Activities and Personnel
Balloons - Observation - Balloons. Releasing an observation balloon
Balloons - Observation
Artillery observation post on the Western front. March 1917
German Military Activities and Personnel
Balloons - Observation - Bringing out an observation balloon from hang...
Date Taken: 3/0/1918 Photographer: Balloon Detch. Ft. Sill, Oklahoma Balloons - Observation
Balloons - Schools - Inflating an observation balloon, Polo Grounds, W...
Photographer: C.P.I. Balloons - Schools
Balloons - Hangars and Beds - British Observation Balloon about to mak...
Photographer: Kadel & Herbert Balloons - Hangars and Beds
Balloons - Flights - Pulling an observation balloon into position
Balloons - Flights
Ceremonies - Demobilization - Great Parade of the 27th Division. Like ...
Photographer: Underwood & Underwood Ceremonies - Demobilization
Balloons - Flights with Ships in View - Observation balloon aboard an ...
Photographer: C.P.I. Balloons - Flights with Ships in View
Balloons - Flights with Ships in View - U.S. Battleship and Observatio...
Photographer: Underwood & Underwood Balloons - Flights with Ships in View