Go, Jourdon Anderson!

[bunn]

"In August of 1865, a Colonel P.H. Anderson of Big Spring, Tennessee, wrote to his former slave, Jourdan Anderson, and requested that he come back to work on his farm. Jourdan - who, since being emancipated, had moved to Ohio, found paid work, and was now supporting his family - responded spectacularly"

http://www.lettersofnote.com/2012/01/to-my-old-master.html