First ARGON Mapping Satellite Lauched 48 Years Ago Today
The first ARGON mapping satellite was launched 17 February 1961. The ARGON satellites carried film cameras and ejected film canisters. The imagery was declassified in the Clinton administration. The CORONA, ARGON, and LANYARD satellites exposed more that 2 million feet of film between 1959 and 1972. You can get the imagery and more information from USGS.