The Mining District Files consist largely of historical and current maps, reports, articles, photographs, correspondence, assays, production reports, and reserve information on all aspects of mining in Nevada. These have largely been donated to the NBMG over the years from individuals, companies, and other government agencies. Over the last several years NBMG has undertaken the digital conversion of these paper documents into scanned images. The digital file conversion project at NBMG is ongoing - note that some of the documents in this collection searchable metadata but have not yet been scanned.