Description: A National Oceanic and Atmospheric Administration map of Tortugas Harbor current to 1922. This Department of Commerce chart shows all soundings expressed in feet. Fort Jefferson on Garden Key is detailed. Navigational aids such as lights, beacons, buoys, and measures of magnetic declination variances are shown. The map scale is 1:10,000. Key to NOAA maps. Source: National Oceanic and Atmospheric Administration, United States - Gulf Coast, Florida (Washington, DC: United States Coast and Geodetic Survey, 1922) Map Credit: Courtesy the U.S. National Oceanic and Atmospheric Administration |
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