In 1931, the farm acquired the mare La Troienne from noted French breeder Marcel Boussac.
Later generation champions such as Buckpasser and Easy Goer trace their line to La Troienne.
As well, under farm manager Olin B. Gentry and future Hall of Fame trainer "Derby Dick" Thompson, and later trainer Bill Hurley, the farm raced horses that won numerous major stakes races, including multiple winners in each of the U.S.
Allen T. Simmons purchased Idle Hour Farm at auction and the property was divided into smaller parcels.
Moore owned it for only a short time before selling it to the John W. Galbreath family in 1949 who renamed it Darby Dan Farm.