Carlton Garfield Thomas Sr., 71, a former D.C. policeman, died at Suburban Hospital in Bethesda Nov. 15 following a heart attack.

Mr. Thomas spent two periods of his life as a member of the metropolitan police. The second began in 1942 and continued until his final retirement in 1951. He had remained in retirement since then for reasons of health.

He was born in the Seminary Hills Section of Alexandria. He grew up there and in Washington and at one time attended the Manassas Industrial-Agricultral School in Manassas, Va. He became a driver for the Washington Evening Star and was elected tresurer of his local when the drivers were organized by the Teamsters Union. He later joined the police force.

Mr. Thomas was a member of the Chapel of the Atonement Episcopal Church in Washington.

Survivors include his wife, the former Lavonia Fields, of the home in Kensington; two daughters, LaVonne T. Claytor, also of Kensington and Andree T. Nelson, of Sacramento, Calif.; a son, Carlton G. Jr., of Waldorf; five sisters, Elizabeth S. Cope, Cornelia T. Dawson, Caroline T. Delaney, Kathleen T. Hillman, and America T. Skipper, all of Washington; two brothers, Arthur G. Jr., of Rochestr, N.Y., and Kloman M., of Washington, and nine grandchildren.