What was the original name of the county where Mike Horse, Montana is located?
Lewis and Clark County, Montana Lewis and Clark County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 63,395. Its county seat is Helena, the state capital. The numerical designation for Lewis and Clark County (used in the issuance of the state's license plates) is 5. The county was established in 1865 as Edgerton County, and was renamed "Lewis and Clark County" two years later. The present name was given in honor of explorers Lewis and Clark.
Mason County, Washington Mason County is a county located in the U.S. state of Washington. As of the 2010 census, the population was 60,699. The county seat and only incorporated city is Shelton. The county was formed out of King County on March 13, 1854. Originally named Sawamish County, it took its present name in 1864 in honor of Charles H. Mason, the first Secretary of Washington Territory.