This series contains letters to Henrietta Cox, including letters to Henrietta and Josiah Cox from Henrietta's aunt Emma E. Cooper. The educational records contain many school papers, including records related to Cox's Topeka High School, University of Kansas, and Washington University attendance. The professional records include those from Cox's work with the Child Day Care Association, as well as employment correspondence and information from various colleges. The organizational records chiefly cover Cox's participation in Greek organizations (specifically, Alpha Kappa Alpha and Sigma Xi) and her participation with Jack and Jill of America, Inc. As with other series in this collection, Cox's personal records include various personal books (address, autograph, baby books, and diary), biographical information, drawings, various programs, clippings, and financial information.