 The city was on historic U.S. Route 66 in California, present-day Colorado Boulevard, with businesses serving travelers on it.Thoroughbred horse racing had flourished briefly under Lucky Baldwin, who founded a racetrack adjacent to the present site, until it was outlawed by the state of California in 1909.It returned to Arcadia when racing was legalized again, with the opening of Santa Anita Park in December 1934.