Key to the Heartの兄弟一覧

馬名	父	母	生年	ファミリー
Fort Marcy	Amerigo	Key Bridge	1964	f2n
Seven Locks	Jacinto	Key Bridge	1968	f2n
Key to the Mint	Graustark	Key Bridge	1969	f2n
Key to the Kingdom	Bold Ruler	Key Bridge	1970	f2n
Key Link	Bold Ruler	Key Bridge	1971	f2n
Key to the Heart	Arts and Letters	Key Bridge	1972	f2n
Dumbarton Oaks	Arts and Letters	Key Bridge	1973	f2n
Gliding By	Tom Rolfe	Key Bridge	1975	f2n
Key to Content	Forli	Key Bridge	1977	f2n

Key to the Heartの兄弟血統表