Abstract The Happy Jack Mine records (1938-1993) consist of correspondence, reports, financial records, news clippings, and legal documents related to the operation of the Happy Jack Mine by Cleone Bronson Cooper Hansen and her first husband, Joe Cooper. Included are materials documenting other business and mining interests of Cleone Hansen and her second husband, Cecil P. Hansen. Also included are documents related to the estate of Joe Cooper. The Happy Jack Mine was located on the southwest rim of...