Rex M. Naylor, 84, a former college history instructor and civilian historian of the Air Force, died Wednesday at Georgetown University Hospital of complications from a stomach and intestinal ailment.

From 1952 to 1964, he was a historian at Langley Air Force Base in Hampton, Va., commuting there from his home in Washington. During World War II, he had served in the Post Office Department's office of censorship here.

Mr Naylor was in Union City, Tenn. He was a graduate of Yale University, where he also earned a master's in history and elected to Phi Betz Kappa.

After serving as an Army intelligence officer in World War I, he became a history instructor at Yale. Later he taught at Dartmouth College, Middlebury College in New York.

Mr. Naylor published historial research articles in the New Republic, the Yale Review, the Saturday Review of Literature and the Quarterly Journal of the New York Historical Association.

He was a member of the Capitol Hill Restoration Society, the Potomac Rose Society and the American Association of Retired Persons.

He is survived by his wife, Martha Ball Naylor, of the home in Washington.

The family suggests that expressions of sympathy be in the form of contributions to Christ (Episcopal) Church Capitol Hill.