<iframe width="580" height="385" src="https://www.youtube.com/embed/A-tTEVMFjL8?autoplay=1" frameborder="0" allowfullscreen></iframe> <br>It's estimated that just after the Civil War, one in four cowboys were African American. In his series 'Delta Hill Riders', photographer Rory Doyle takes us inside ... <br><a href="https://www.youtube.com/watch?v=A-tTEVMFjL8">source</a>