Help a Reader out: Kentucky horse country/Derby romances

One of the delights I've discovered in my new home state is bourbon whiskey. I like it neat and in cocktails. There are seven distilleries within driving distance of my house and guests often get dragged to tours and tastings.

In honor of my new treat, I'm hunting down romance novels set in Horse Country and/or that involve the Kentucky Derby (I know Nora Roberts did a series...) I'd like a HUGE list so... comment and recommend some reads!