George R. Hammond, 70, a retired official of the American Automobile Association who was active in volunteer, civic, and Masonic organizations, died Dec. 4 at the Manor Care nursing home in Wheaton. He had cancer.

Mr. Hammond, who lived in Wheaton, was a native of Altoona, Pa., and former Adelphi resident. He had moved here in 1941 when he joined the AAA. For more than 30 years, he was known as "Mr. George," and directed training camps for area school safety patrols. The camps were sponsored by the AAA and area police department. From 1971 until retiring in 1977, he was manager of the AAA's member relations department.

He was a past chairman of the Prince George's County Traffic Safety Committee, a life member of the Maryland Driver Education Teachers Association, and had been president of the Citizens Traffic Board of the District of Columbia. He also had held posts with the American Camping Association, and the Maryland Commission on Health.

He had served as president of the Prince George's County Memorial Library Board and was a past commissioner of the Southern Maryland Basketball Board.

Mr. Hammond was a Mason and member of Almas Temple. He was a member of Moose Lodge No. 453 in College Park. At the time of his death, he was secretary of the Mid-Atlantic Shrine Clowns Association, and member of the Clowns of America.

His wife of 47 years, the former Nellie Mays, died in 1981.

Survivors include a son, John, of Takoma Park; a daughter, Lee Anna Mielzarek of Yellow Spring, W.Va., and two grandchildren.