Clark was a
Democrat. Clark served as a member of the
Maryland House of Delegates, representing
Harford County, from 1935 to 1947. Clark worked as a lawyer. He had a law practice with Paul McNabb, but later practiced alone and with partners Michael Birch and Mr. Kahoe. He served as a trial magistrate of Harford County from 1959 to 1967. He was chief judge of the People's Court of Harford County from 1967 to 1970. He served as an attorney on the board of county commissioners in Harford County from 1971 to 1972. He retired in 1986. In the 1970s, Clark helped the state arrange the purchase of the land that became the Fair Hill Natural Resource Area. Clark was chairman of the Tidewater Fisheries Commission and the Board of Natural Resources. He was a founding member of the Maryland Historical Trust and was appointed founding chairman of the Maryland Environmental Trust by Governor
Spiro Agnew. He was appointed lead for the Governor's committee in the Keep Maryland Beautiful campaign by Governor
Theodore R. McKeldin and served as executive secretary of the Maryland State Fair board. ==Personal life==