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Levitating Rock
GLS19A04_386

Levitating Rock

Large River, Aerial, Colorado, USA
GLS19A04_321

Large River, Aerial, Colorado, USA

Rugged Landscape and Rivers, Aerial, Colorado, USA
GLS19A04_322

Rugged Landscape and Rivers, Aerial, Colorado, USA

Margaret D. Foster, First Female Chemist to work for U.S. Geological Survey, Portrait, Washington DC, USA, National Photo Company, October 1914
GLS18A05_079

Margaret D. Foster, First Female Chemist to work f...