The Riley collection contains large amounts of material related to the history of Nebraska and its people. There are four series: 1) Research Materials; 2) Correspondence, 1973-1975; 3) Vertical File Materials; and 4) Miscellaneous Materials.
Series 1, Research Materials, encompasses over half of the entire collection. Included here are mainly transcriptions of newspaper clippings organized by subject. Substantial material can be found specifically relating to Webster County history, Willa Cather, cattle ranching, various forts, the Pawnee tribe, and the genealogy of many pioneering families.
Series 2, Correspondence, 1973-75, is a small series of Rileyís letters to and from individuals