Colorado. State Historical Society. Library.

• A calendar of the papers of Governor William E. Sweet, 1869-1942
• A calendar of the papers of Horace Austin Warner Tabor, 1830-1899
• A calendar of the papers of Irving Wallace Stanton, 1835-1921
• A calendar of the papers of Junius R. Lewis, 1842-1938
• A calendar of the papers of Robert F. Weitbrec, 1848-1931
• A calendar of the papers of Scott J. Anthony, 1830-1903