Because of erroneous information supplied to The Washington Post, an obituary in Monday's editions about Joseph L. Orr, who died Saturday, gave an incorrect date for his retirement to Washington. Mr. Orr was director of the Liaison Office of the United Nations Food and Agriculture Organization in New York from 1956 to 1967, when he retired and moved to Washington.

Joseph L. Orr, 77, who retired in 1957 as Liaison Office director of the United Nations Food and Agriculture Organization, died Saturday at Sibley Memorial Hospital. He had a heart ailment and emphysema.

Mr. Orr joined the Food and Agriculture organization in 1948. He served as special assistant to the Organization's director-general, first in Washington and then in Rome, from 1949 to 1956, then as Liaison Office director until retiring a year later.

Before working for the United Nations, he had spent more than 25 years with the U.S. Department of Agriculture. He joined the department's Crop and Livestock Reporting Service here in 1923, then went to South Dakota for three years as a statistician for USDA. He returned to Washington in 1930.

During his later years with the Agriculture Department, he was administrative assistant to the under secretary of Agriculture and then was assigned to the Allied Military Government in Germany after World War II. He left Agriculture to join the United Nations.

Mr. Orr was a native of Lindley, N.Y., and earned a bachelor's degree at South Dakota State University. He had lived in Washington since retiring in 1957 from United Nations headquarters in New York.

He was a 32nd degree Mason and a member of the Scottish Rite, the Royal Order of Jesters, and Almas Temple.

Mr. Orr was a member of the Metropolitan Memorial United Methodist Church in Washington.

Survivors include his wife, Sylvia, of Washington, and a sister, Kathryn Orr of Silver Spring.

The family suggests that expressions of sympathy be in the form of contributions to the Memorial Fund of the Metropolitan Memorial United Methodist Church.