Title: Dangerous crossings
Subjects: MacMillan Arctic Expedition (1925), American, Journeys, Discovery and exploration, Travel, MacMillan Arctic Expedition (1925) http://id.loc.gov/authorities/names/n00002668, MacMillan Arctic Expedition (1925) (uri) http://id.loc.gov/authorities/names/n00002668 (uri) http://viaf.org/viaf/sourceID/LC|n00002668