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The Black Stallion's Blood Bay Colt (Black Stallion Stories, 6) (original 1950; edition 1950)
The Black Stallion's Blood Bay Colt by Walter Farley (1950)
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Wikipedia in English
A boy is entrusted to attend the birth, train, and drive a blood bay colt that is the great hope of an aging reinsman who refuses to be reconciled to the fact that sulky-racing has moved from the county fair to the big night time, moneymaking raceways.
(summary from another edition)
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