The Monmoniers were a pioneer family of Cochise County, AZ. William Donalin Monmonier and his son, Charles Swaney Monmonier, were active in Tombstone and Pearce, AZ as storekeepers, Justices of the Peace, Notaries Public, members of the Pearce School Board, and Registrars of births and death.
This collection consists of correspondence, financial records, photographs relating to the family and their businesses of store keeping, gas stations, and trailer courts. Legal papers, financial records, stockholders lists, assay reports, time books, and correspondence relate to the Flourine Mine and Milling Company, Leadville Mining Company, and others. Correspondence, reports, and cemetery records of the Knights of Pythias, Valley Lodge No. 21 are present. Cochise County Dist. 9 Justice Court proceedings, 1903 - 1908, and birth and death records, 1909-1939, are also present. Photographs are of Pearce mining and ranching operations, of Pearce and Tombstone residents, and of Monmonier family members.