Washington county was one of the first 33 counties organized by the Territorial Legislature, but was not organized until April 9, 1860. The Oregon Trail passed through the northwest portion of the county assisting in making the area known to settlers, and establishing some businesses in the county. The Pony Express route came through the northwest portion of the county in 1860-1861, roughly following the Oregon Trail route. Washington County Courthouse and most of Washington was destroyed by a tornado on July 4, 1932 (Kansas Historical Society).
This is a view of a large flock of sheep in front of a barn on the Eddy farm in Washington County, Kansas. Source: (Kansas Historical Society)