David N. Yerkes, 99, a retired Washington architect who took up abstract painting in the later years of his life, died Oct. 28 at his home in the District.

He had congestive heart failure, said his wife, Sara Hitchcock Yerkes.

Mr. Yerkes practiced architecture in Washington from the end of World War II until about 1980, and his work included design of public buildings, schools and homes.

In the early years of his career, he was a principal in the firm of Deigert and Yerkes. Later he practiced in architectural partnerships with John Parker and Nicholas Pappas. He was a former vice president of the American Institute of Architects.

On retiring as an architect, he studied at the Corcoran Gallery of Art. His wife said he painted until shortly before his death.

David Norton Yerkes was born in Cambridge, Mass. He graduated from Harvard in 1933 and received a master’s degree in architecture at Yale in 1935. He worked in Chicago before World War II.

During the war, he served in the Army Corps of Engineers.

He collected medieval armor, and several pieces of his collection are on loan to the Cleveland Museum of Art.

His first wife, Catharine Noyes Yerkes, died in 1969. Survivors include his wife of 39 years, Sara Hitchcock Yerkes of Washington; a daughter from his first marriage, Catharine Yerkes Kulski of Washington; a granddaughter; and two great-grandsons.

— Bart Barnes