Lender's Bagel Bakery was sold to Kraft in 1984. It was operated by brothers Samuel, Murray and Marvin, The New Haven Register reported Thursday.
Murray and Marvin Lender were also restaurant owners. Samuel Lender died in 2004, the newspaper said.
Murray Lender was the bagel company's chairman when it was sold. At the time, it was the largest bagel bakery in the world.
Murray Lender also served on the board of Quinnipiac College and was co-chairman of the Relocation Steering Committee of the New Haven Jewish Community Center.
He was active as a philanthropist on behalf of the American Heart Association, the Leukemia Society of America and the Juvenile Diabetes Foundation, the newspaper said.
"He was generous to a number of causes in the New Haven area," said Woodbridge First Selectman Ed Sheehy.
"Quite obviously we will miss him," Sheehy said.