Charles L. Fields was a prominent pioneer dentist and farmer who, as a boy, cut wood to support his mother after she was widowed in the Civil War. He worked as a carpenter to earn money for dental school in Chicago, was licensed in 1890, came to Canadian in 1903, and to Groom in 1916. At times he traveled to ranch headquarters and to Ochiltree and Mobeetie to treat patients unable to go to him, often fording rivers while hauling his collapsible dental chair and foot-powered drill. He used iodine and laudanum as antiseptics and pain-killers, operated his own denture lab, met a large demand for gold teeth, and often was paid in beef and produce.