he National Cowboy Gathering this year will focus on cowboys in Florida. http://www.westernfolklife.org/site1/index.php

there is a beautiful song by Ian Tyson,"La Primera" which
has a book named after it (her...it means the first one in spanish..)
http://www.iantyson.com/pages/home.asp

this page states that horses were first brought to Florida in
1493 by christopher columbus and crew. many died en route.

here is more about the book

http://www.tundrabooks.com/catalog/display.pperl?isbn=9780887768637

Here is an organization , which i volunteer with,
in northern Calif. which helps allow wild horses to live..www.wildhorsesanctuary.org/

(and adopts out the babies born to the herd-to keep the
herd from out-growing their avaialbe space)