Lyn Henderson Clark, 55, a former Montgomery County Democratic Party activist who also served as Maryland's Democratic National committeewoman and party cochairwoman, died of cancer Jan. 10 at Beebee Hospital in Lewes, Del.

Mrs. Clark, who lived in Rehoboth Beach, Del., was born in Washington. She graduated from Western High School and George Washington University. She served on GWU's board of trustees and on its 1987 presidential search committee.

A former resident of Kensington, she directed Democratic Party fund-raising campaigns in Montgomery County during the 1960s and 1970s. She had been a delegate to state party conventions and a member of the platform committee of the Democratic National Committee. She was the secretary of the Maryland delegation to the Democratic National Convention in 1968.

In 1972 she was cochairwoman of the State Democratic Party and a Democratic National Committeewoman.

Mrs. Clark also had been a fund-raiser and trustee of the American Heart Association.

She moved to Colorado in the late 1970s, and had lived at Rehoboth Beach since 1980.

Survivors include her husband, William G. Clark, one daughter, Elizabeth Clark Sadler, and one son, William G. Clark Jr., all of Rehoboth Beach; her mother, Myrlie Henderson of Annapolis; one brother, Leon Henderson of Rocky Mount, N.C.; one sister, Beebe Castro of Shadyside, Md., and one granddaughter.

ELEANOR C. McDOWELL, 74, a retired lawyer and treaty adviser at the State Department, died of cancer Jan. 13 at Georgetown University Hospital. She lived in Washington.

Mrs. McDowell was born in New York City. She graduated from the College of New Rochelle in New York and earned a law degree at George Washington University.

She moved to the Washington area in 1941 and joined the State Department. She was an adviser at the Conference on Antartica in 1959 and a member of the U.S. delegation to the U.N. Conference on Consular Relations in Vienna in 1963. She also had been on assignments in London, Monte Carlo and Tokyo. She retired in 1977.

Mrs. McDowell was a member of the American Bar Association and the American Society of International Law. From 1974 to 1976, she was the editor of the Digest of International Law. She was a member of the Belle Haven Country Club in Alexandria.

She received the State Department's John J. Rogers Award in 1977 and its Meritorious Service Award in 1978 for her work during her career.

Her husband, James McDowell, died in 1947. Survivors include a sister, Alice Hickey of Yonkers, N.Y., and a brother, Francis Flynn of South Venice, Fla.

ALETHIA H. COLE, 92, a former school teacher and Census Bureau clerk who was active in church, died of cardiac arrest Jan. 2 at Providence Hospital. She had been hospitalized since breaking a hip in a fall in her home in Washington early in November.

Mrs. Cole was born in Fulton County, Ga. She graduated from Clark University in Atlanta in 1914. Before moving to Washington in 1919 she taught school in Decatur, Ga.

From 1930 to 1935, she was a Census Bureau clerk. She also had been a recreation specialist with the D.C. government. She helped rear several foster children.

Mrs. Cole was a deaconess at the Nineteenth Street Baptist Church in Washington and a member of the Robert T. Freeman Dental Society Auxiliary.

Her husband, Dr. Simeon J. Cole, died in 1977, and a daughter, Audrey Williams, died in 1965.

Survivors include a son, Dr. Simeon J. Cole Jr. of Philadelphia; six grandchildren, and seven great-grandchildren.

SYLVIA DURRIE SHAFROTH, 58, a Washington art teacher and artist who also had been a docent at the National Gallery of Art, died of cancer Jan. 13 at her parents' home in Chevy Chase.

Miss Shafroth was born in Denver and she had lived in Washington since 1939. She was a graduate of Madiera School and American University, and she received a master's degree in art from the Tyler School in Philadelphia.

In 1963 she worked at the Art Center in Wilmington, then returned to Washington where she taught private art lessons. She also had one-person art shows in Denver and in Evanston, Ill.

Recently she had given slide shows on art and taught art at the National Institutes of Health, where she had been a patient for several years.

Miss Shafroth was a member of the Friends Meeting in Washington.

Survivors include her parents, Will and Janet Shafroth of Chevy Chase, and a brother, Stephen Shafroth of Chapel Hill, N.C.

PATRICIA CAULFIELD CHRISTIE, 60, who was active in volunteer, civic and political organizations in Northern Virginia, died of cardiac arrest Jan. 13 at Fairfax Hospital.

Mrs. Christie, who lived in McLean, was born in Elizabeth, N.J. She attended Green Mountain College in Vermont, and she graduated from New York University.

Before moving to the Washington area about 25 years ago, she had worked in personnel jobs in New Jersey and Pennsylvania.

She was a member of the Fairfax Hospital Auxiliary and the Woodside Citizens Association and had been a volunteer campaign worker for Republican candidates in Northern Virginia.

Survivors include her husband, John S. Christie of McLean; one daughter, Sherryl McBride of Issaquah, Wash.; one son, John Christie of Baltimore, and one granddaughter.

RICHARD M. HARTLEY, 63, a retired aerospace engineer with the aviation department of the Navy's David Taylor Research Center at Carderock, died of cancer Jan. 14 at Potomac Valley Nursing Center in Rockville.

Mr. Hartley, who lived in Bethesda, was born in Oakland. He served in the Army during World War II, then graduated from the University of Illinois.

He moved to the Washington area after college and went to work for the Navy Department. He retired in 1984, but had continued to work on a consulting basis since then.

Mr. Hartley was a railroad enthusiast and a member of the Western Maryland Railroad Historical Society, the Silver Spring Model Railroad Society and the National Model Railroad Association. He was also a member of the American Institute of Aeronautics and Astronautics.

There are no immediate survivors.

ANN MILLER GOOCH, 52, an African-program officer with the Agency for International Development where she had worked since 1978, died of cancer Jan. 7 at Sibley Memorial Hospital. She lived in Bethesda.

She began her government career as a State Department clerk in Paris in 1957. She later was stationed in New Delhi, then worked for the Council on Foreign Relations in New York City.

In 1963, she began a nine-year tour with the Peace Corps. She worked for the agency in Washington and Africa. From 1972 until joining AID in 1978, she worked in Switzerland for the ORT philanthropic organization.

Miss Gooch was born in Chicago and reared in California. She was a member of the Smithsonian Associates. Her hobbies included quilting.

Survivors include her parents, G. Amsden and Florence Gooch, both of Baltimore, and two sisters, Susan G. Russell of Cockeysville, Md., and Mary G. Armour of Colorado Springs.

LOUIS W. LABOFISH, 100, who had owned and operated Standard Typewriter Co., a Washington-based typewriter sales, rental and repair firm, died of heart and lung ailments Jan. 12 at his home in Wheaton.

Mr. Labofish was born in Odessa, Russia. He came to the United States as an infant and he grew up in Washington. After attending elementary school in Washington, he became an apprentice at the Remington Rand Typewriter Co. He served in the Army in France during World War I.

He formed his own business, Standard Typewriter Co., shortly after World War I and he retired 30 years ago.

His wife of 55 years, Rosina Finotti Labofish, died in 1981.

Survivors include two daughters, Paulina L. Garner of Silver Spring and Louise Hanbury of Wheaton; a sister, Lillian E. Hearn of Mesa, Ariz.; five grandchildren, and two great-grandchildren.