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Federal
USGS National Structures Dataset - USGS National Map Downloadable Data Collection NGDA
Department of the Interior —
USGS Structures from The National Map (TNM) consists of data to include the name, function, location, and other core information and characteristics of selected... -
Federal
USGS Global Fiducials
National Aeronautics and Space Administration —
The Global Fiducials Library (GFL) is a long-term archive of images from U.S. National Imagery Systems which represents a long-term periodic record for selected...