siblings of College Boards xx

half siblings paternal 6

half siblings paternal

broodmare Rum Bottle Bay xx (Thoroughbred, 1959, from Thinking Cap xx)

Rum Bottle Bay xx
gender-female
1959

Thinking Cap xx / Hard Tack xx

broodmare Witching Hour xx (Thoroughbred, 1960, from Thinking Cap xx)

Witching Hour xx
gender-female
1960

Thinking Cap xx / Lovely Night xx

broodmare Capped xx (Thoroughbred, 1961, from Thinking Cap xx)

Capped xx
gender-female
1961

Thinking Cap xx / Count Fleet xx

broodmare Ways to Learn xx (Thoroughbred, 1962, from Thinking Cap xx)

Ways to Learn xx
gender-female
1962

Thinking Cap xx / Requested xx

broodmare Glen Arm xx (Thoroughbred, 1961, from Thinking Cap xx)

Glen Arm xx
gender-female
1961

Thinking Cap xx / Mahmoud xx

broodmare Prayer Cap xx (Thoroughbred, 1962, from Thinking Cap xx)

Prayer Cap xx
gender-female
1962

Thinking Cap xx / Better Self xx