E.D. Drown collection => Philadelphia Academy of Sciences
Photo:
Norsk Bergverksmuseum
E.D. Drown collection => Philadelphia Academy of Sciences
Photo:
Norsk Bergverksmuseum
E.D. Drown collection => Philadelphia Academy of Sciences
Photo:
Norsk Bergverksmuseum
E.D. Drown collection => Philadelphia Academy of Sciences
Photo:
Norsk Bergverksmuseum