Above is an illustration I made of Jack Prince with the Evilgoods Key.
In 1889, Prince left England to represent British cycle interests in the wildly expanding American marketplace. To establish himself, the 30 year-old English champion resumed bicycle racing in America. At a celebrated race in Omaha, Nebraska, Prince won a match race that was billed as the high-wheel championship of the world. Shortly thereafter, he gave up selling English bicycles and went into business as a promoter of bicycle velodromes.
By 1909, Prince had expanded his endeavors to include board tracks designed for motorcycle racing, such as the Los Angeles Coliseum, as well as larger tracks for automobiles. The larger tracks, such as the one Prince built in 1910 at Playa del Rey, were granted sanctions for a limited number of major car races. Consequently, track operators would also stage motorcycle races to generate additional revenue.