Collection consists mostly of articles, addresses, reminiscences, and other such manuscript material written by Stubbs on a variety of topics, such as prairie fires, the Santa Fe trail, Samuel Newitt Wood, Mahlon Stubbs, Charles J. or "Buffalo" Jones, early railroads, slavery, Native Americans in Kansas, and early Kansas history. Also includes poetry and material with religious themes, incoming and outgoing correspondence mostly from the 1920s up to 1930, typed copies of diary entries, a microfilmed volume of words and phrases presumably from the Kansa language, and other related materials
The Robert Rankin papers, 1886, 1914, 1956-2011, document his field work, research, and professional activities, primarily in relation to his work studying American Indian languages. Rankin was professor of linguistics at the University of Kansas from 1969 until his retirement in 2005. The collection consists of sound recordings, field notebooks, vocabulary lists and bibliographies, dictionaries, research files, slip files, word lists, correspondence, ephemera, notes, readings and reprints, writings, drafts, and teaching materials. This includes materials from Rankin's work with the last native speakers of the Quapaw and Kaw (Kansa, Kanza) languages and subsequent research, writings, and collaborations with tribes and fellow linguists.