SUNNYVALE, Calif. (AP) — Hal Buell, who led The Associated Press' photo operations from the darkroom era into the age of digital photography over a four-decade career with the news organization that included 12 Pulitzer Prizes and some of the defining images of the Vietnam War, has died. He was 92.

Buell died Monday in Sunnyvale, California, after battling pneumonia, his daughter Barbara Buell said in an email. His final two months were spent with her and her husband, and he died in their home with his daughter at his side.

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