He was most notable for his service as an associate justice of the Vermont Supreme Court from 1905 to 1906, and again from 1917 to 1923.

[1] He was educated in Albany, and attended academies in Barnston and Hatley, Quebec.

[2] Miles taught school in Albany and Craftsbury, and studied law with attorneys Charles I. Vail and William W.

[2] When Grout retired in 1888 in order to devote full time to his duties as a member of the United States House of Representatives, Miles continued the practice on his own.

[5] In 1904, Miles was elected to represent Barton in the Vermont House; when Clarke C. Fitts resigned as a Representative to become Vermont Attorney General, Miles took his place as chairman of the House Judiciary Committee.

[12][14] Mabel Augusta Miles was the wife of Frank D. Thompson (1876–1940), who served as an associate justice of the Vermont Supreme Court.