1. Electromagnetic survey maps showing apparent resistivity of the Getchell gold trend, Osgood Mountains, north-central Nevada Yale Public content 1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Nevada, Humboldt County, and Osgood Mountains.