Osage County was created as Weller County as one of the first 33 counties created by the Territorial Legislature. The county
 was named for Senator John Weller of California, a pro slave supporter. Because of his political leanings the county name
 was changed to Osage for the Indian tribe when the county was organized on February 11, 1859. The county contains the
 cities of Quenemo, Burlingame, Overbrook, Melvern, Olivet, Osage, Carbondale, Scranton and Lyndon.

 The crossing of the Santa Fe Trail through the county near the 110 Mile Creek Crossing, and the coming of the railroads all
 contributed to the settlement of the county. The arrival of reserved Indians in the county, and their ultimate removal in the
 1870s were major events in the county and the state. The construction of two federal lakes, Pomona and Melvern, in the
 county were major factors in the development of tourism and manufacturing, made possible by the fresh water supply and
 the flood control protection.