• Print from digital photograph, April 8, 1985. Geography and Map Division, Library of Congress. Courtesy of United States Geological Survey/Earth Resources Observation and Science Center (001.00.00)
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• Print from digital photograph, September 17, 2007. Geography and Map Division, Library of Congress. Courtesy of United States Geological Survey/Earth Resources Observation and Science Center (029.00.00)
• Print from digital photograph, April 28, 2001. Geography and Map Division, Library of Congress. Courtesy of United States Geological Survey/Earth Resources Observation and Science Center (030.00.00)
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• Print from digital photograph, February 28, 1985. Geography and Map Division, Library of Congress. Courtesy of United States Geological Survey/Earth Resources Observation and Science Center (033.00.00)
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• Print from digital photograph, April 28, 2001. Geography and Map Division, Library of Congress. Courtesy of United States Geological Survey/Earth Resources Observation and Science Center (039.00.00)
• Print from digital photograph, September 22, 2002. Geography and Map Division, Library of Congress. Courtesy of United States Geological Survey/Earth Resources Observation and Science Center (040.00.00)

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