Phyllis Moore Dorn, 68, author of 15 novels of numerous short stories that were published in newspapers and the old Saturday Evening Post and other magazines, died of cancer Wednesday at Walter Reed Army Medical Center.

The Washington Evening Star published her first story, "Stubby Fingers," and serialized her first novel, "Lovely Little Fool."

Many of her stories were set in Washington. Her last novel, published about 1960, was "All Is Not Quiet on the Potomac."

Mrs. Dorn also painted in watercolors and had individual exhibitions in Washington, New York and California. She was a pianist who gave recitals at the Wasington Club.

She was born in Staunton, Va., and educated in Washington and Paris. She returned to Washington in 1930 and married Bernard J. Gallagher, a lawyer. He died in 1963.

In 1964, she married retired Army Brig. Gen. Frank Dorn. In addition to their home in Washington, they maintained summer residence in Carmel and Pebble Beach, Calif.

Mrs. Dorn was a member of the Daughters of the American Revolution, the Colonial Dames, the Huguenot Society and the Jamestown Society. She also belonged to the Washington and Georgetown clubs here and the Casa Abrego Club in Monterey, Calif.

In addition to her husband, of the homes in Washington and California, survivors include a son by her first marriage, Bernard J. Gallagher Jr., of Washington, and a brother, retired Navy Adm. Howard Shackelford Moore, of Camarillo, Calif.