1. Preliminary map showing distribution of altered rocks and limonitic unaltered rocks in the Walker Lake 1° by 2° quadrangle, Nevada-California [cartographic material] Yale Public content 1980. 2002-06-01T04:00:00Z. 2022-12-09T04:08:27Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. Nevada, California, California., and Nevada.