My dad just sent me the link for an amazing story in Philadelphia Weekly about black cowboys in Fairmount Park:
"For years black cowboys bought horses at livestock auctions in New Holland, Pa., and cared for them at stables in North and West Philadelphia. Many of the cowboys bought horses as hobbies in their retirement, taking them for weekend rides through the neighborhood and across Fairmount Park's many trails. Today a dwindling number of cowboys still buy aging racehorses--many of which would otherwise be killed--and give them a second racing life."
The pictures are great--check the whole piece out.