William Huckaby, 51, a concert organist, vocal coach and conductor who performed at the Kennedy Center, Wolf Trap Farm Park and elsewhere in the Washington area and throughout the country, died of congestive heart failure Feb. 18 at his home in Arlington.

Mr. Huckaby was associate conductor and accompanist for the Choral Arts Society and for the last eight years had been director of music at St. Margaret's Episcopal Church in Washington.

He was an adjunct professor at the University of Maryland, and he also had taught at the Peabody Institute of Johns Hopkins University. He was also chorus master for the Washington Opera Company and artistic director of the AIDS Quilt Songbook.

Mr. Huckaby was born in Atlanta and graduated from Southern Methodist University. He came to Washington in 1967 as a pianist for the U.S. Army Chorus.

For several summers he was music director at Wolf Trap. He had conducted annual performances of "The Nutcracker" for the Washington Ballet. At Arena Stage he led productions of "Candide," "On The Town" and "Of Thee I Sing."

Mr. Huckaby also taught private music lessons at a studio in Arlington. He had given recitals in this country and in Europe with singer William Parker.

He had conducted the orchestra of the American Institute for Musical Studies in Austria, Germany, Italy and Slovenia and had conducted for opera companies in Boston, Kansas City, Minneapolis and Orlando.

For two seasons, Mr. Huckaby was music director of the Western Opera Theater, which is the touring and educational arm of the San Francisco Opera.

Survivors include his wife, Margaret Huckaby of Arlington, and his mother, Frances Huckaby, and a brother, David Huckaby, both of Atlanta. ROMA WORNALL POWELL Club Member

Roma Wornall Powell, 89, a member of Washington area groups that included the Junior League of Washington, died of cardiac arrest Feb. 21 at her home in Washington. She had lived in the Washington area for more than 70 years.

Mrs. Powell was born in Kansas City. She was a graduate of the Gunston Hall School in Washington and attended George Washington University. She was a docent in Williamsburg in 1959 and an administrative aide at the Madeira School in 1960.

She was a member of the Washington National Cathedral, the National Society of Colonial Dames of America, the Sulgrave Club and the Chevy Chase Club.

Her first husband, Charles Elmore Cropley, clerk of the U.S. Supreme Court, died in 1952, and her second husband, Wellington Powell, died in 1989.

Survivors include a daughter from her first marriage, Louise Cropley Eaton of Washington, and two stepsons. DOLORES E. MINOR Secretary

Dolores E. Minor, 55, secretary at St. James United Methodist Church in Alexandria from 1983 to 1992, died of a brain tumor Feb. 19 at her home in Alexandria.

Mrs. Minor was born in St. Francois, Mo., and moved to the Washington area in the 1950s. She attended George Washington University.

She was a secretary and editor with the National Education Association as a young woman. She held offices that included financial secretary at St. James and sang in the choir.

Survivors include her husband, Ralph E. Minor of Alexandria; three children, David E. Minor of Altdorf, Germany, Stephen A. Minor of Alexandria and Jennifer E. Minor of Blacksburg, Va.; a sister, Shirley Kaye Pollard of Crestwood, Mo.; and four grandchildren. DAVID H. BAU Library of Congress Librarian

David H. Bau, 82, a senior cataloguer at the Library of Congress since the early 1960s, died of lung cancer Feb. 16 at his home in Washington. He had lived in the area off and on for more than 50 years.

Mr. Bau was a native of Shanghai, China, and a graduate of Nanking University. He did graduate work in economics at the University of Maryland and received a master's degree in library science from the University of Michigan.

He did agricultural credit work for banks in Shanghai, Canton and Hong Kong in the 1930s and was an agricultural economist with the Foreign Economic Administration in Washington during World War II.

He served with the Army in Japan after the war and was an agricultural economist with the United Nations Food and Agricultural Organization until 1951. He operated a restaurant in Georgetown, the Sino Cafe, and a restaurant in San Juan, Puerto Rico, before joining the Library of Congress.

Survivors include his wife, June Lee Bau of Washington; three children, Deanna Bau of New York and Paul Bau and Ronald Bau, both of Weston, Mass.; and four grandchildren.