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Melanie and Mary at Mushroom Spring, 2004.
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Michael Kuhl and Andrea Wieland at Mushroom Spring, late 1990's.
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Michael Kuhl and Andrea Wieland at Mushroom Spring, late 1990's.
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Mike Ferris and Dave at Octopus Spring, 1994.
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Alyson Ruff-Roberts, Gjis Kuenen, Eric Kopczynski, and Dave at Clearwater Spring, early 1990's.
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Alyson Ruff-Roberts at Octopus Spring, early 1990's.
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Roland Weller at Octopus Spring, mid-1980's.
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Niels Peter Revsbech doing microsensor analysis at Octopus Spring, early 1980's.
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Kent Kremmerling near upper temperature limit of cyanobacterial mat, Firehole Lake Loop Road area, late 1970's.
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Ken Sandbeck at a hot spring near Yellowstone Lake, late 1970's.
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