The Sidney Edgerton Papers include the following series: I. Correspondence, II. Speeches, III. Certificates, and IV. Miscellanea. The papers span Sidney Edgerton's adult life and political career. The papers are especially useful for researchers regarding its coverage of the Civil War period in both Washington, DC and Akron. Information about the United States' westward expansion can also be found here. The bulk of the papers are correspondence (Series I). The personal lives and relationship between Sidney and Mary is contained in the correspondence series. Letters also exist between Sidney and other family members. Series I is divided into subseries based on correspondent. One notable subseries is the Gubernatorial Letters, which pertain to territorial business, 1865-1866. One notable correspondence is the gubernatorial letters, which pertain to territorial business, 1865-1866. They are reports sent to Edgerton, who was away in Tallmadge, Ohio by his nephew, Wilbur F. Sanders, and General Thomas F. Meagher. Within each subseries, the letters are arranged chronologically. The few speeches relate to the abolition of slavery, Mormons, Roger Williams, and a testimony to fallen soldiers. The eyewitness view given by Edgerton of Brigham Young and Salt Lake City may have research value. Speeches are organized chronologically. Series III contains certificates relating to various accomplishments of Edgerton, including education, law, memberships, and deeds. Arranged chronologically. Miscellanea (Series IV) contains biographical material and notes. Included are two printed biographies, one is of Sidney Edgerton written by his nephew, Wilbur F. Sanders for Rocky Mountain Magazine (February 1901) and the other is of his wife, Mary Wright Edgerton. The latter was published in The Montana Magazine of History.