<P> On April 28, 1958, Geisel appeared on an episode of the panel game show To Tell the Truth . </P> <P> Geisel's wife Helen had a long struggle with illnesses, including cancer and emotional pain over Geisel's affair with Audrey Stone Dimond . On October 23, 1967, Helen committed suicide; Geisel married Dimond on June 21, 1968 . Though he devoted most of his life to writing children's books, Geisel had no children of his own, saying of children: "You have' em; I'll entertain' em ." Dimond added that Geisel "lived his whole life without children and he was very happy without children ." </P> <P> Geisel received the Laura Ingalls Wilder Medal from the professional children's librarians in 1980, recognizing his "substantial and lasting contributions to children's literature". At the time, it was awarded every five years . He won a special Pulitzer Prize in 1984 citing his "contribution over nearly half a century to the education and enjoyment of America's children and their parents". </P> <P> Geisel died of oral cancer on September 24, 1991 at his home in La Jolla at the age of 87 . He was cremated and his ashes were scattered . On December 1, 1995, four years after his death, University of California, San Diego's University Library Building was renamed Geisel Library in honor of Geisel and Audrey for the generous contributions that they made to the library and their devotion to improving literacy . </P>

When did dr. seuss win the pulitzer prize