 After he returned from war, Henry rejoined the family business, which included, over the years, manufacturing and wholesaling of drugs, first in Waterbury, and then in Burlington, Vermont.Henry served as a state senator from Washington County from 1865 to 1868, and from Chittenden County in 1888-1889.He served as mayor of Burlington from 1887 to 1889, succeeding George H. Morse and being succeeded by Seneca Haselton.