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City
San Francisco Aerial Photos (1938-2022)
City of San Francisco —
Aerial photos taken of San Francisco between 1938 and 2017. -
Federal
Historical Shorelines for Puerto Rico from 1901 to 1987
Department of the Interior —
The U.S. Geological Survey (USGS) maintains shoreline positions for the United States coasts from both older sources, such as aerial photos or topographic surveys, as...