Robert Calhoun Smith, 67, the superintending architect of the Washington National Cathedral whose work included office buildings, churches and apartments, died of lymphoma Nov. 18 at Sibley Memorial Hospital. A resident of the Washington area since 1949, he lived in Chevy Chase.

Early in his 43-year career here, Mr. Smith worked on the design of houses in the Hollin Hills community of Alexandria in association with the pioneering contemporary architect Charles E. Goodman, who died recently.

Mr. Smith later designed Catholic churches in Northern Virginia, Gaithersburg and Raleigh, N.C., and became consulting architect for the Cathedral of St. Matthew and the National Shrine of the Immaculate Conception and superintending architect of the National Cathedral.

His commercial architecture included more than two dozen office buildings, including 1275 Pennsylvania Ave. NW, the Peat Marwick Building at 20th and M streets NW, Washington Park at Washington Circle NW, the Xerox Building in Rosslyn and the Vanguard Building at 20th and L streets NW.

Mr. Smith's renovations were award-winning and included the McLean Gardens condominium complex in Northwest Washington, Dahlgren Chapel at Georgetown University, Fairlington Village condominiums in Alexandria and the State Department office building at 515 22nd St. NW.

Born in Little Rock, Ark., and reared in Houston, Mr. Smith was a graduate of Rice University. He served in the Navy in the Pacific after World War II.

Mr. Smith began his private practice in 1959 and later was a partner of Smith, Segreti, Stilwell & Hasselman. He retired from his Smith McMahan firm this year.

Mr. Smith was a fellow of the American Institute of Architects, president of its Washington chapter and regional director of its national board. He was a regent of the American Architectural Foundation and a member of the Sovereign Military Order of Malta, the Catholic Church of the Little Flower in Bethesda and the Columbia Country Club.

Survivors include his wife, Kathryn Kirlin Smith of Chevy Chase; four children, Robert Calhoun Smith Jr. of Potomac, Dr. Barry Kirlin Smith and Nicholas Reid Smith, both of Washington, and Mary Kathryn Wohlmuth of Reston; three brothers, Cecil Smith, Dr. Alfred Smith and Barry Smith, all of Houston; seven sisters, Marjorie Eyring and Thelma Stewart, both of La Grange, Tex., Ann Smith of Hunt, Tex., Mary Jo Smith of Nederland, Tex., Rose Chow of Houston, Patsy Clements of Bacliff, Tex., and Judy Ortego of Huntsville, Tex.; and a granddaughter.


Artist and Computer Specialist

April Margaret McLearn, 46, an artist and computer specialist, died of cancer Nov. 16 at her home in Gaithersburg.

Mrs. McLearn was born in Tampa. She graduated from the University of South Florida with a degree in art education.

From 1968 to 1975 she was a computer specialist with Honeywell there.

She moved to the Washington area in 1975. From 1976 to 1979 she was a technical writer and editor with the Food and Drug Administration in Rockville. She also worked for the FDA as a computer specialist from 1985 to 1988. She had received a Special Recognition Award and a letter of commendation from the Public Health Service.

Mrs. McLearn had been a substitute art teacher in Montgomery County schools. She had done volunteer work in art and other classroom activities and she was a member of parent-teacher associations. She did volunteer work for the North Creek Swim Team.

Survivors include her husband of 19 years, Donald C. McLearn, and two children, Scott Deen McLearn and Molly Margaret McLearn, all of Gaithersburg; her parents, Robert and Frances Deen of Zephyrhills, Fla.; and two sisters, Teresa Renteria and Robin Shields, both of Tampa.


Applications Processor

Mary Haynes Kelly, 83, a retired applications processor with the Department of the Air Force, died of congestive heart failure Nov. 17 at Holy Cross Hospital. A resident of the Washington area for 55 years, she lived in Silver Spring.

Mrs. Kelly retired in 1961 after 23 years with the government, first as a civilian clerk in the Army ordnance division and later as an employee of the Army Air Corps and Air Force. She began her career in the 1930s as an elementary school teacher in Burlington, N.C.

Mrs. Kelly was born in Spencer, N.C. She attended Elon College in North Carolina.

She was a member of the Order of the Eastern Star, the International Order of Jobs Daughters, Takoma Park Baptist Church and the Daughters of the American Revolution.

Her husband, Kalmor Charles Kelly, died in 1971.

Survivors include two daughters, Patricia Kelly Strange of Carlsbad, Calif., and Kathleen Cheryl Kelly of Silver Spring; two sisters, Mackie F. Haynes of Burlington and Betty Haynes Baker of McLean; three brothers, James F. Haynes of Burlington, Thomas E. Haynes of Aiken, S.C., and Clarence G. Haynes of Fairfax; five grandchildren; and two great-grandchildren.