Repeat Photos of Sperry Glacier
In 1988 Lisa McKeon crunched out onto Grinnell Glacier with her parents. Other hikers were also scattered about, taking photos and exploring the glacier.
She didn’t know it at the time, but she would be hiking to many of the park’s glaciers over the next three decades. McKeon would go on to spend her career studying the park’s glaciers for the U.S. Geological Survey (USGS).
McKeon was instrumental in the creation of the USGS’s repeat photography project, an effort to photographically document the park’s glaciers. This project took her into both the park’s archives and its mountains. In the archives, she made copies of old photographs of glaciers—pictures taken by early Euro-American scientists like George Bird Grinnell and her USGS predecessor, William Alden.
Citation
National Park Service. Repeat Photos of Sperry Glacier (U.S. National Park Service)
National Park Service.
https://www.nps.gov/articles/000/repeat-photos-of-sperry-glacier.htm
Accessed 22 August 2026.
Archived at: https://web.archive.org/web/20260805071615/https://www.nps.gov/articles/000/repeat-photos-of-sperry-glacier.htm