Dr. Watson be known as a 'Watson'." Dr Watson's first name is mentioned on only four occasions. Part one of the very first Sherlock Holmes story, "A Study in Scarlet", is subtitled "Being a reprint from the Reminiscences of John H. Watson, M.D., Late of the Army Medical Department". The preface of the collection "His Last Bow" is signed 'John H. Watson, M.D', and in "The Problem of Thor Bridge", Watson says that his dispatch box is labelled 'John H. Watson, M.D'. His wife Mary Watson appears to refer to him as 'James' in "The Man with the Twisted Lip"; Dorothy L.
James S. Watson was admitted to practice before the United States District Court for the Southern District of New York. Watson remained at House, Grossman and Vorhaus, now as a lawyer until 1920, becoming head of their Department of Corporate and Tax Law. In 1920, Watson and two other black attorneys, S. T. Christian and J. E. Stevens founded their own law firm, where he would practice law until 1930. In 1922, he became Special Assistant Corporation Counsel to New York City in the Special Franchise Tax Division. He also represented Marcus Garvey during the 1920s. Watson ran for municipal judge in 1930