An old letter?

If this is a hoax, it's an old one (or else somebody is very good at Photoshopping old newspapers).

A slave freed after the Civil War replied to a request from his former master to come back and work for him, and his answering letter was printed in the paper.

It is worth reading as a grimly humorous reminder of what used to be.

But something about it doesn't read quite right to me, as though somebody else, without a strong personal involvement in the matter, either re-wrote it or composed it from scratch. I can't quite put my finger on all the reasons why, but one odd note is the worry he expresses about the safety of his daughters. It seems too light. And would any decent man of the era (or any era, for that matter), so readily tell the world about shameful injuries to his family?