[1] A Republican, Munson served as Manchester's Town Clerk from 1866 to 1873, and Bennington County's Register of Probate from 1866 to 1876.

In 1878 he won election to the Vermont Senate and was chosen as that body's President pro tempore, serving until 1880.

In 1882 Munson returned to the Vermont House, and in 1883 he was appointed as the Manchester District's Judge of Probate.

[3] His retirement lasted only a month; public outcry led the Vermont General Assembly to return Munson to the bench in January 1915 with appointment as chief justice.

[4] While serving as a justice of the Court, Munson authored the opinion in the well-known torts case Ploof v.