Margaret Carnegie Miller, the only child of Andrew Carnegie, the steel manufacturer and philanthropist.
She was born March 30, 1897, to Mr. Carnegie and Louise Whitfield, whom Mr. Carnegie married when he was 51. Mr. Carnegie died in 1919. Mrs. Miller's marriage to Roswell Miller ended in divorce. She is survived by one of her four children, Barbara M. Lawson of Cranby, Colo.; 13 grandchildren; 26 great-grandchildren, and 2 great-great-grandchildren.
From 1934 to 1973 she was a trustee of the Carnegie Corporation of New York, the grant-making foundation established by her father in 1911. From 1973 until her death she was an honorary lifetime trustee.