Mrs. Geisel was the second wife of Theodore Geisel (Dr. Seuss) and recently passed away on December 19th, 2018 at the age of 97. Married in 1968, Audrey Geisel was keeper of the Dr. Seuss estate and established Dr. Seuss Enterprises. She also donated thousands of letters and other Seuss items which are held at the Geisel Library at the University of California San Diego.
Obituary: Audrey Stone Geisel
Palisades Free Library Blog 