1. Maps showing the distribution of the platinum-group elements and gold in rocks from the western half of the Medford and part of the adjacent Coos Bay 1⁰?x 2⁰?quadrangles, southwestern Oregon Yale Public content 1986. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Oregon.