Antarctica--Discovery and exploration]]> Sledges]]> Nicholas B. Clinch]]> jpg]]> Antarctica, 1966 to 1967]]> American Alpine Club Photo Collection]]> .jpg]]> Colorado, 1900 to 1930]]> Maps]]> Antarctica]]> Nicholas B. Clinch]]> jpg]]> Antarctica]]> Maps]]> Antarctica]]> Nicholas B. Clinch]]> jpg]]> Antarctica]]> canyon]]> Marble Canyon National Monument (Ariz.)]]> American Alpine Club Photo Collection]]> .jpg]]> Arizona, 1900 to 1930]]> canyon]]> Marble Canyon (Ariz.)]]> Rock Creek (Ariz.)]]> American Alpine Club Photo Collection]]> .jpg]]> Arizona, 1900 to 1930]]> Andrew James Gilmour]]> jpg]]> Andrew James Gilmour]]> jpg]]> Andrew James Gilmour]]> jpg]]> Andrew James Gilmour]]> jpg]]>