In the early 1920s, the Los Angeles Athletic Club (L.A.A.C.) decided to build a country club community in the Brentwood area. Consequently, the Riviera Country Club was born, as were some of the homes surrounding the golf course. The L.A.A.C. also built three championship polo fields on the site of what is now Paul Revere. Jr. High School. In the ensuing decades, the Beverly Hills Polo Club, a project of oil magnate Russell E. Havenstrite, gathered crowds for matches every Sunday during polo season at the L.A.A.C. fields. Polo players such as C.D. LeBlanc and thoroughbred breeders, including Elizabeth Whitney of Kentucky, bought property in Mandeville and Sullivan Canyon and built houses and stables for their ponies.