The fascinating images provide insight about what type of information spies were collecting during the Cold War.
The images were taken mostly of Soviet weapons, including missiles, self-propelled guns, and launching platforms.
Some images were labeled with the date, classification, and event.
Each photo was also labeled with the latitude and longitude, and in some cases a vague description of the source.
next slide will load in 15 secondsSkip AdSkip AdThis formerly confidential image shows truck-mounted rocket launchers.
Ground-launched surface-to-air missiles pass by as the band plays during the 1961 May Day parade.
This photo was labeled, 'Exempt from automatic downgrading and declassification.'
This image from the 49th anniversary of the Bolshevik Revolution shows typical Soviet propaganda in Red Square.
This photo appears to be mislabeled.
The ABM-1 Galosh was an anti-ballistic missile defense system arranged to protect Moscow.
ABM-X-2 is the nomenclature for project Aurora, an apparently unsuccessful attempt to expand the Galosh system.
Whoever was taking these photos seemed to have a front-row seat.
next slide will load in 15 secondsSkip AdSkip AdAlthough these images were clearly geared towards the weapons systems, it's just as interesting to see the scenery and propaganda of the era.