Vermont's 4th congressional district is an obsolete district. It was created in 1803. It was eliminated after the 1850 Census. Its last Congressman was Thomas Bartlett, Jr..
List of Representatives
Vermont added 4th district in 1803.
From 1813-1821, beginning with the 13th Congress, Vermont elected its US Representatives statewide At-Large
After the 16th Congress, Vermont returned to electing Congressmen from districts
References
Vermont's 4th congressional district Wikipedia(Text) CC BY-SA