Obituaries of residents from the District, Maryland and Northern Virginia.

Charles S. Blankstein, lawyer, USAID officer

Charles S. Blankstein, 80, a lawyer and former officer of the U.S. Agency for International Development whose specialties included improving business practices for farmers and rural development programs, died April 30 at a medical care center in Washington. The cause was congestive heart failure, said his wife, Lucy J. Blankstein.

Mr. Blankstein, a District resident, was born in the Bronx. He was an attorney for the Securities and Exchange Commission and later worked for NASA before joining U.S. AID in 1967. His postings included Bolivia and Ecuador, and he also traveled extensively in Africa, Asia and the Middle East. He directed the office of project development from 1979 until retiring in 1983.

Donald E. Smith, CIA officer

Donald E. Smith, 90, a former director of training and education for the CIA who in retirement became a dealer and author of studies on American prints, died May 4 at an assisted-living center in Burtonsville, Md. The cause was pulmonary fibrosis, said a daughter, Veronica Lallier.

Dr. Smith, a Washington resident, was born in Kalida, Ohio. From 1949 until his 1981 retirement, he served mostly with the CIA but also for limited periods with other federal agencies. His writing on American prints included a catalogue on the prints of Emil Ganso and a bibliography of 20th-century American printmakers.

Anna Siefken, businesswoman

Anna Siefken, 60, a specialist in business development who worked at Lockheed Martin from 1998 to 2006, followed by four years with Native American Industrial Distributors, a business specializing in personnel support, died May 2 at a hospital in Bethesda, Md. The cause was cancer, said her husband, William Siefken.

Mrs. Siefken, a resident of Silver Spring, Md., was born Anna Platek in Warsaw. She was an office administrator at U.S. embassies in Africa and Canada and joined the World Bank in Washington in 1989.

Marian E. Beratan, librarian

Marian E. Beratan, 89, who spent 15 years as a reference librarian at the National Library of Medicine in Bethesda, Md., before retiring in 1995, died April 19 at her home in Potomac, Md. The cause was ovarian cancer, said a son, Howard Beratan.

Mrs. Beratan was born Marian Eisenberg in Philadelphia and moved to the Washington area in 1970. In retirement, she was a volunteer at the Jewish Council for the Aging.

Ardon B. Judd Jr., lawyer

Ardon B. Judd Jr., 79, former attorney for what then was Dresser Industries, which produced technology products and services for developing energy and natural resources, died April 25 at his home in Houston. The cause was cancer, said his wife, Ruina Wallace Judd.

Mr. Judd, a Houston native, came to Washington in 1963 as a trial lawyer for the Federal Trade Commission. Later, he practiced law with the firm of O’Connor and Hannah. From 1970 to 2000, he was an attorney for Dresser, which in 1998 merged with business rival Halliburton, which later sold the business to an investment banking firm. He moved to Houston from Washington in 2003. He was a member of the Chevy Chase Club in Maryland and St. John’s Episcopal Church, Lafayette Square, in Washington.

James E. Delaney, CIA officer

James E. Delaney, 85, a CIA senior intelligence officer who specialized in Asian matters, died April 26 at his home in Chevy Chase, Md. The cause was cancer, said a daughter, Patricia Delaney.

Mr. Delaney, a native of Newton, Mass., began his CIA career in 1951 and remained with the agency while serving in the Army during the Korean War. He later served in CIA stations in Vietnam, Thailand and Taiwan and was station chief in Korea and Japan. He retired in 1993 and received the CIA’s Distinguished Intelligence Medal. In retirement, he was a senior fellow at the National Defense University’s Institute for National Strategic Studies and a consultant for the Institute for Defense Analyses.

— From staff reports