The Williams River Subdivision of the Chesapeake & Ohio was built and operated by Tom Sullivan of Richmond, Virginia. It was a point-to-point occupying a 25 x 28 foot two car garage. This layout was dismantled in June 2003 when Tom moved to Virginia Beach and switched to On30. The Williams River Sub was part of the Allegheny Alliance and connected with the WM - Elk River Sub at Slaty Fork.