This collection consists of letters that discuss family affairs, droughts and crops. J. S. Clark mentions carrying mail, "following" cotton, and Mormons. Lizzie mentions raising chickens and pigs. It also contains a marriage certificate for J. S. Clark and Mary Ann Pedigrew from Kansas in 1873.

The Clifford and Mary Margaret Shumaker Papers include their educational diplomas and pedigree charts, as well as papers and photographs from the lives of Mary Margaret Shumaker's Bouse, Nichols, Little, and Clark family ancestors, many of whom resided in or near the Kansas communities of Centralia, Denison, Holton, and Almena.

Edith Clarke's papers include correspondence and genealogical material about her family; correspondence with many prominent Lawrence, Kansas citizens and University of Kansas professors; papers pertaining to the University of Kansas Library and other libraries in Kansas around 1900; personal financial records, bank statements and tax receipts; and numerous photographs, greeting cards, and calling cards.

These papers of Grace R. Clark, an Arkansas City, Kansas piano teacher, church organist, and choir director, include clippings, photographs, and other mementos from her life and from the lives of her Clark family members.

This collection contains the papers of Penny L. Clark, who has been an archivist at a variety of institutions, mostly in Texas. The collection includes personal diaries, weekly planners, material documenting academic and professional research projects, correspondence, photographs, and scrapbooks documenting personal and professional endeavors.