I read some of those... I used to love the Fury books, by Albert Miller and there were three books by Mary O'hara (my friend Flicka, Thunderhead, and the Green Grass of Wyoming) that were really good... And then there was Saddle A Thunderbolt and a fictional book about Man O' War that was really good... And I read Seabiscuit.....
"Be a best friend, tell the truth, and overuse I love you
Go to work, do your best, don't outsmart your common sense
Never let your prayin knees get lazy
And love like crazy"