Worth Bailey, 71, a retired research associate with the National Park Service and a former curator at Woodlawn Plantation, a historic property in Mount Vernon, died of cancer July 6 at Mount Vernon Hospital in Alexandria.

Mr. Bailey was a specialist in early American houses and furnishings. He first worked for the Park Service at the Colonial National Historical Park, which includes parts of Jamestown, Williamsburg and Yorktown. In 1938, he became a research associate at Mount Vernon, the home of George Washington, and remained there until 1951.

In the latter year, he was appointed curator of Woodlawn, a property that is under the jurisdiction of the National Trust for Historic Preservation. He held that post until 1956.

Mr. Bailey then became a free-lance consultant on restoration. Among the buildings on which he worked were the Whitehall house in Annapolis and St. Luke's Episcopal Church in Smithfield, Va.

From 1957 until his retirement in 1962, he was a researcher at the Park Service. Mr. Bailey was a private consultant from then until about 1970, when he retired a second time. He had lived in Alexandria since 1938.

A native of Norfolk, Mr. Bailey attended the College of William and Mary and earned a bachelor's degree at the University of Pennsylvania, where he studied landscape architecture.

He was a member of the Alexandria City Board of Architectural Review and the Virginia Historical Society.

His wife, the former Olive Drinkwine, died in January. Mr. Bailey's survivors include a brother, Merryman P. Jr. of Greenville, N.C.