The collection contains three letters and several articles by Robert F. Gilder. Gilder wrote two of the letters to A.E. Sheldon of the Nebraska State Historical Society to discuss their archaeological research. A third letter, dated January 19, 1922, is to Eolia Marquardt of Avoca, Nebraska, in which Gilder gives an account of his scientific discoveries and research. The collection also contains several reprints of articles concerning Nebraska, Iowa, and South Dakota archaeology. Photocopies of Gilder's "The Nebraska Culture Man" are included.