Dissolved Counties: Arapaho 30 Aug 1855 - absorbed into Finney 1883. El Paso 11 Feb 1859 and later disorganized. Fremont 11 Feb 1859, later disorganized. Broderick 11 Feb 1859, later disorganized. Buffalo 1873, disorganized 1881, land annexed to Lane County. Garfield 5 Mar 1887, annexed to Finney 1893. Hageman 26 Feb 1867, later disorganized. Howard 30 Aug 1855, reorganized into Elk and Chautauqua. Irving 27 Feb 1860, annexed to Butler 1864. Kansas 6 Mar 1873, annexed to Seward 1883. Oro 11 Feb 1859, later disorganized. Montana 11 Feb 1859, later disorganized. Peketon 27 Feb 1860, later disorganized. Otoe 27 Feb 1860, annexed to Butler 1864. Rush 26 Feb 1867, later disorganized 1883. Sequoyah 30 Aug 1855, renamed Finney 21 Feb 1883. Shelby 1865, annexed by Washington. Woodson 30 Aug 1855, had major boundary changes in 1868.