Jonathan Bourne, Jr. (1855-1940) was an American politician, attorney, and businessman. A native of Massachusetts, he moved to Portland, Oregon, where he became a lawyer and an industrialist with holdings in mining, mills, and agriculture. His mine holdings were concentrated in Oregon and Idaho, Nevada, California and in the Republic Mining District and the Ruby Hill Mining District in Washington State.
From the guide to the Jonathan Bourne Mining records, 1880-1938, (Special Collections and University Archives, University of Oregon Libraries)