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glacier photograph pair

Muir Glacier, Alaska, photographed in August 1941 (left) and August 2004 (right). These images are from the NSIDC Glacier Photograph Collection, held in the Analog Archives of the Roger G. Barry Resource Office for Cryospheric Studies at NSIDC.

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The National Snow and Ice Data Center

Advancing knowledge of Earth's frozen regions
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Cooperative Institute for Research in Environmental Sciences (CIRES)    University of Colorado Boulder