Personal and professional papers of mathematics professor Edward Kasner (1878-1955). Materials include biographical content about Kasner, correspondence, lectures and writings, many newspaper clippings, much information related to his popular book "Mathematics and The Imagination" (1940), sketch books, and an outline for a children's book about mathematics called "Mathematics for Caroline". Material dating after his death consists of tributes, correspondence about a relative trying to get his children's book published, and information about him and the term "googol" which he coined in 1940.