August 15: In 1909, an automobile racer died in a race in Cheyenne when his car struck a cow on the racetrack.

August 16: In 1920, the first airplane to land in Kemmerer crashed into a tree during the process.

August 17: In 1996, an Air Force cargo plane carrying equipment for President Bill Clinton crashed in the state, killing eight crewmembers and a Secret Service employee.

August: 18: In 1959, a magnitude 7.7 earthquake occurred about 78 miles from Cody and Jackson. (Thanks On This Day.)

Information provided by Wyoming State Historical Society via the Wyoming News Exchange.