He was employed as a doctor, living at 502 N. College, in 1923 and served as a major with the US Public Health Service. This is a quote from The Alumni Review which quoted the Atlanta Constitution 'Captain John K. Ross, of Charlotte, N. C., one of the best known and most efficient officers of the medical department at Camp Gordon, has succeeded Major William H. Best, discharged Saturday, to the position of chief medical examiner of the cantonment. Captain Ross has been at Gordon for the past 17 months, during which time he has held positions of responsibility that fit him to assume the position vacated by Major Best, who is a member of the New York board of health. Captain Ross' best work was done in the fight he waged so successfully against malaria germs and mosquitoes at the Norcross rifle range last summer.'Name appears on the 2nd Presbyterian Church service flag, presented on 9-2-1918.