Winfield parks, 45, a prize-winning National Geographic photographer who had taken pictures around the world, died Thursday at his home in Washington after a heart attack.

He had joined National Geographic in 1961 and since then had traveled nearly a quarter of a million miles through 40 countries in Europe, Asia and the Middle East and in North and South America.

Mr. Parks' color photographs won many awards, including first place in the feature categroy from the White House News Photographers Association last year.

He also was cited last year by the National Press Photographers Association for his photographs from the Middle East. The pictures helped National Geographic win the NPPA award for the "best use of photographs by a magazine."

In 1963, Mr. Parks was one of the first military planes to reach Anchorage, Alaska, after it was devastated by an earthquake. In 1967, he went to Vietnam to photograph the war from the ground and the air.

Born in West Barrington, R.I., Mr. Parks began taking pictures at the age of 7. He used an 1891 "Premo" box camera that he had found in the attic of the family home. Later, the big cherrywood camera with its brass and copper fittings was a prized memento at his home in Washington.

He worked part-time for the Providence Journal-Bulletin while attending the Rhode Island School of Design and took a full-time job with the newspaper in 1950. Except for two years as a Navy photographer in Korea, he remained with the paper until joining National Geographic.

In 1956, Mr. Parks rushed to a police stakeout carrying a borrowed press camera with one plate enabling him to make only two photorgaphs. Both won Prizes.

One picture, showing the suspect's car trying to run the photographer down as police fired at it, took first place in the annual Associated Press competition. The other, of police cornering the gunman, took second place.

Mr. Parks' works won both him and the Journal-Bulletin other awards, including the National Headliner Award. His photographs were published in Life, Look, Time, Fortune, the Saturday Evening Post and other national magazines.

There were many other adventures for Mr. Parks during his long career. An Egyptian soldier arrested him as a spy after finding him lying in the sand, camera poised, waiting for the right moment for a sunrise photograph.

He narrowly escaped being washed overboard while taking pictures of a ship in squall and emerged unhurt from the crash landing of a plane in the West Indies. He once hung upside down from a helicopter 2,000 feet in the air to get the pictures he wanted in Singapore.

He is survived by his wife, Deborah Kenney Parks, of the home.