Bertram Benedict, 86, a retired editor and writer with Editorial Research Reports in Washington, died of cancer Sunday at Memorial Hospital in Easton, Md.

He joined Editorial Research Reports in 1929 to help change it from a weekly to a daily service. It had been founded in 1923 by the late Richard M. Boeckel to supply background facts on national and international issues to newspaper editors and writers, university and public libraries and federal government agencies.

Mr. Benedict became part-owner of the service in 1949. He retired in 1959, three years after the service became affiliated with the Congressional Quarterly.

He and his wife, Ruth, a former newspaper reporter, then realized a dream when they moved to a new home on Tabb's Creek on Antipoison Neck near White Stone in Tidewater Virginia.

There they had their boat and their own crab pot and oyster bar. While they continued to wriite for periodicals and newspapers, it was at their own pace. Stories were written about their happy transition from busy city to quiet country life.

Eight years later, in order to be closer to frienddsds in Washington and Baltimore, they moved to a home on the Tredavon River inn Oxford, Md., where they continued to boat and fish until about a year ago. Mr. Benedict remained an active bicyclist until last [TEXT OMITTED FROM SOURCE]

Born in Baltimore, he was a graduate of Johns Hopkins University, where he was elected to Phi Beta Kappa. He became a social worker in settlements in Pittsburgh and Syracuse and then moved to New York, where he joined the old Bureau of National Literature in 1917. There he wrote the two-volume "History of Great Wars" and edited "Messages and Papers of Presidents."

Mr. Benedict was the author of "The Larger Socialism," an examination of the weaknesses of the U.S. socialist movement, which was published by Macmillan in 1921. He contributed to The New York Times Sunday magazine and its book review section.

In addition, to his wife, of the home in Oxford, he is survived by a sister, Margaret B. Morrison, of Baltimore, and a brother, Howard S., of Tiburon, Calif.

The family suggests that expressions of sympathy may be in the form of contributions to Amnesty International USA, the American Friends Service Committee or Johns Hopkins University.