David Letterman's mother, Dorothy Mengering, has died. She was 95.
The Midwestern homemaker became an unlikely celebrity as she baked mystery pies and covered the Olympics for her son's late-night shows on NBC and CBS.
The news of her death was confirmed by Letterman's publicist and reported by The Associated Press and other news outlets.
Her first appearances came from her Carmel, Indiana, kitchen for a segment called "Guess Mom's Pies," which became a Letterman show Thanksgiving tradition. She soon started making annual Mother's Day appearances too.
She really became a star when the show made her a correspondent at the 1994 Winter Olympics in Lillehammer, Norway.
"After Lillehammer, I couldn't believe how it all took off," Mengering told The New York Times in 1996. "I think it's about the idea of mom and of a family."
Mengering lived in Indiana. She married Letterman's father, Harry Letterman, in 1942. He died in 1973, and she married structural engineer Hans P. Mengering, who died in 2013.