Sunflower, Kansas Sunflower, Kansas Sunflower was a rural community in Center Township in Mitchell County, Kansas, United States, established in 1890. Walter and Honora (Tilton) Cooke came to Mitchell County, Kansas in 1884. They leased with an intent to buy the NE 1/4 of Section 36 in Center Township from the State of Kansas. By 1890, a small community had formed. A blacksmith, creamery, school and small store had been established by 1895. The Cooke's purchased the property on February 23, 1897 for $1,154.00. On April 27, 1898, the Sunflower community was recognized by the U.S. Government by installing a post office.
Secondary state highways as branches of Primary State Highway 7 (Washington) Route 10 about a mile north of Kittitas. SSH 7B was removed from the state highway system in 1953. The route is not part of the modern Washington state route system. When it was added to the state highway system in 1951, Secondary State Highway 7C originated at US 10/PSH-7 at the east end of the Vantage Bridge, at a point where the main highway turned north to climb out of the Columbia River Valley. From the banks of the Columbia, SSH 7C headed east to a junction with US 395/PSH 11 west of Othello, remaining roughly parallel to US