Big Harvest (牝 1943 黒鹿毛 Reaping Reward)
 `-- Oil Princess (牝 1949 黒鹿毛 Errard)
     |-- Oil Rich (牝 1955 黒鹿毛 Phalanx)
     |   |-- Rich Reserve (牝 1961 青毛 Swaps)
     |   |-- Method Actress (牝 1962 Round Table)
     |   `-- Sweet Heaven (牝 1967 栗毛 Olympia)
     |-- Princess Diane (牝 1957 Phalanx)
     |   `-- Dianette (牝 1976 Thorn)
     |-- Oil Royalty (牝 1958 鹿毛 Greek Song)
     |   `-- Barbsie (牝 1970 T.V. Lark)
     |-- Strike Oil (牝 1959 黒鹿毛 Prince John)
     |   |-- Everglow (牝 1971 黒鹿毛 Jacinto)
     |   |-- Scarlet Gold (牝 1977 Crimson Satan)
     |   `-- Slippery (牝 1981 鹿毛 Seattle Slew)
     `-- Rich Royalty (牝 1960 鹿毛 Prince John)
         `-- Major Play (牝 1971 鹿毛 B. Major)