Ruth Boorstin, 95, writer and editor

Credit: Boorstin Family

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WASHINGTON — Ruth Boorstin, the stalwart collaborator and editor of her late husband, former librarian of Congress and prize-winning historian Daniel Boorstin, died Dec. 1 at an assisted-living center in Encino, Calif. She was 95.

The cause was sudden cardiopulmonary arrest, said a granddaughter, Julia Boorstin Samuelson.

Mrs. Boorstin was a published poet and for decades a prominent member of Washington society. She came to Washington when her husband was named director of the Smithsonian Institution’s National Museum of History and Technology, now the National Museum of American History, in 1969.

He became librarian of Congress in 1975 and held the post until 1987.

Daniel Boorstin, who died in 2004, described his wife as his ‘‘principal and most penetrating editor.’’

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