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The Walkup Papers
Cave and Karst clippings
UGS West Desert Fossils
National Fossil Day 2013
National Fossil Day 2012
National Fossil Day 2011
National Fossil Day 2010
The Mammoth Site and Hot Springs
Kenosha Public Museum (WI)
Tule Springs (Nevada)
Physiographic Provinces and the National Park System
geologic time clippings
Heritage Clippings
Geologic Maps in the NPS - Clippings
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