The Kentucky Derby's first place prize is $3.1 million, but track winnings aren't the most lucrative part of race horse ...

In 1821, he opened a stud farm and became so devoted ... this vintage print by Currier and Ives. Horse racing was one of 19th-century America's most popular sports. Illustration via GraphicaArtis ...

The job can be even more difficult if you are a billionaire, aflush with wealth beyond the imagination of most mortals ... like the nearly $16-million horse farm in North Salem, New York for ...