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This photo dates to the early 1920s. The caption reads: The Last Word in Fighting Airplanes. This
UMG25A05_439

This photo dates to the early 1920s. The caption r...

United States of America, New Hampshire. Mount Washington Observatory. An observer measuring the
UMG25A00_020

United States of America, New Hampshire. Mount Was...

This 1902 illustration shows the spectre of the Brocken. A Brocken spectre, also called Brocken
UMG25A01_097

This 1902 illustration shows the spectre of the Br...

Binocular microscope by Nashet for two observers.
UMG23A01_297

Binocular microscope by Nashet for two observers.

Lune
UMG22A66_263

Lune

Le Coupeur de Tetes
UMG22A48_430

Le Coupeur de Tetes

Russian observers, 1959
UMG22A47_290

Russian observers, 1959

Karol Orlos (1894 - 1931) captain, pilot and observer of the Polish Army (ca. before 1931)
UMG22A39_275

Karol Orlos (1894 - 1931) captain, pilot and obser...

Berlin Wall Photo
UMG22A07_013

Berlin Wall Photo

10/20/1998 - Soldiers keep an eye out for North Korean activity from Observation Post Oullette
UMG22A01_107

10/20/1998 - Soldiers keep an eye out for North Ko...

Long Range Reconnaissance Patrol Mission
UMG22A00_117

Long Range Reconnaissance Patrol Mission

Second Lt. Erwin Russell Bleckley, Medal of Honor
UMG22A00_453

Second Lt. Erwin Russell Bleckley, Medal of Honor

Oval World Map
UMG21A17_223

Oval World Map

In the Luxembourg Gardens
UMG20B35_188

In the Luxembourg Gardens

Readers! The U.S. Air Force Needs Your Help!
UMG20B31_133

Readers! The U.S. Air Force Needs Your Help!

Magic Lantern slide circa 1900 hand coloured
UMG20B22_361

Magic Lantern slide circa 1900 hand coloured

Kazakhstan, september 13, 2000, young kazakh soldiers enjoy their participation in international exercises
UMG20B10_078

Kazakhstan, september 13, 2000, young kazakh sold...

Foreign observers examine chemical weapons scheduled to be destroyed at soviet military base of shikhany, saratov region, ussr, october 4th 1987, diplomats and military experts from 45 countries atten...
UMG20B02_364

Foreign observers examine chemical weapons schedul...

Germany - Belgium, 1914-18.
UMG20B15_371

Germany - Belgium, 1914-18.

German observers
UMG20A63_437

German observers

U.S. Army observer in Basket
UMG20A72_410

U.S. Army observer in Basket

U.S. Army observer in Basket
UMG20A72_411

U.S. Army observer in Basket

Military Observer hangs from a Balloon by guide wires looking over battlefield
UMG20A67_243

Military Observer hangs from a Balloon by guide wi...

Train Carries a man 10 stories aloft on what looks like a Chimney
UMG20A57_124

Train Carries a man 10 stories aloft on what looks...

German Unit of Field Observers on ladders and with binoculars 1917
UMG20A63_471

German Unit of Field Observers on ladders and with...

Marine's observers
UMG20A67_067

Marine's observers

Tree-Climbing Observer Gets on His Camouflage
UMG20A74_348

Tree-Climbing Observer Gets on His Camouflage

Learning Aeroplane Observation
UMG20A16_080

Learning Aeroplane Observation

Attack on the Printing Office of the Alton Observer, 1837 from "The Martyrdom of Lovejoy" by Henry
UMG12A14_314

Attack on the Printing Office of the Alton Observe...