Stephen Thompson stands behind a ca. 1880s high-wheeled sulky in the Lost Trotting Parks Heritage Center's display at the Windsor Fairgrounds on Sept. 2. The wheels on modern racing carts are smaller than bicycle tires.

Stephen Thompson of the Lost Trotting Parks Heritage Center takes photos of horses at the Windsor Fairgrounds.

A historic map of a Portland horse racing track, seen Sept. 2, is part of the collection of the Starting Gate Museum at the Windsor Fairgrounds.

Stephen Thompson of the Lost Trotting Parks Heritage Center sets up a video camera in the officials' booth at the Windsor Fairgrounds on Sept. 2. Thompson works for a company that broadcasts races to off-track betting parlors.

A historic map of Lewiston's first horse racing track, seen Sept. 2, is part of the collection of the Starting Gate Museum at the Windsor Fairgrounds.

Stephen Thompson of the Lost Trotting Parks Heritage Center sets up the Starting Gate Museum at Windsor Fairgrounds.