USGS Earth Resources Observation and Science Center
Declassified Satellite Imagery – 1 (CORONA, ARGON, LANYARD), USGS EarthExplorer
Dataset · written 1960 · released February 1995
Why this matters
More than 860,000 spy-satellite images taken from 1960 to 1972, declassified by executive order in 1995 and searchable through USGS EarthExplorer. Archaeologists, glaciologists and historians use them to see landscapes before modern development. Downloads are free, but the portal is notoriously clunky.
Read the original
https://www.usgs.gov/centers/eros/science/usgs-eros-archive-declassified-data-declassified-satellite-imagery-1
Hosted by USGS EROS
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Cite
USGS Earth Resources Observation and Science Center. "Declassified Satellite Imagery – 1 (CORONA, ARGON, LANYARD), USGS EarthExplorer." 1960. Released February 1995. https://www.usgs.gov/centers/eros/science/usgs-eros-archive-declassified-data-declassified-satellite-imagery-1 (accessed via The Quiet Archive, QA-0103).