Lois Lindley DeVecchio, 84, a former apartment building manager who was active in the District's Republican Party, died June 10 at her home in Washington after a heart attack.

Mrs. DeVecchio, a Washington resident since 1958, held various elected and appointed positions in the Republican Party in the 1980s and early 1990s, including Republican national committeewoman for Washington and president of the D.C. Republican Committee and the League of Republican Women.

She also served as a D.C. delegate to the Republican National Conventions in 1984, 1988 and 1992. She was chairman of the Advisory Neighborhood Commission 3D.

She was a native of Mulberry, Kan. Before settling in Washington, where she managed apartment buildings in the 1970s and became involved in the business community, she accompanied her husband, Army Col. Roy G. DeVecchio, on his military assignments to Italy and Japan, among other places.

While in Rome in 1949, she flew on a relief flight during the Berlin Airlift, and in Tokyo in the 1950s, she studied the art of Japanese flower arranging known as ikebana. She later served as the president of Ikebana International.

Her husband died in 1980.

Survivors include two sons, Jay DeVecchio of Burtonsville and R. Lindley DeVecchio of Dumont, N.J.; and three grandchildren.