Sperry Glacier 1913 - 2005

NOTE: Proper credit for any of the photographs should include the photographer and the source (eg. T.J. Hileman, courtesy of Glacier National Park Archives). View the paired images to see examples of proper crediting for each photo. For more information see the section Use Guidelines and Proper Crediting.

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The 1913 image of Sperry Glacier shows the thickness of the glacial ice that once covered the Sperry basin. Now, at approximately 1/3 of it's maximum area, Sperry Glacier continues to recede at a rapid rate. It is one of the glaciers that USGS scientists are monitoring as a benchmark glacier.

PAIRED 1913 photo by W. C. Alden, Glacier National Park Archives - 2005 photo by Karen Holzer, USGS
960x720 pixels (55 kb) format jpeg Sperry13_05.jpg (small file)
960x720 pixels (468 kb) format tif Sperry13_05.tif (small file)
powerpoint format (6.61 mb) Sperry13_05.ppt (very large file)

HIGH RESOLUTION 1913 photo by W. C. Alden, Glacier National Park Archives
2233x644 pixels (718 kb) format jpeg Spr913_Alden.jpg (smaller file)
2233x644 pixels (1.37 mb) format tif Spr913_Alden.tif (larger file)
HIGH RESOLUTION 2005 photo by Karen Holzer, USGS
2220x457 pixels (456 kb) format jpeg Spr005_Holzer.jpg (small file)
2220x457 pixels (999 kb) format tif Spr005_Holzer.tif (small file)