I wonder if Mr. Fortune is related to Amos Fortune, an 18th century African slave (though in his circumstances, he was closer to being an indentured servant), who purchased his freedom, and became financially successful as a tanner. I read the Newbery Award book about him in 3rd grade. It was better than I expected.
He was also a slave in Massachusetts, the North.
I think hearing stories like this and George Washington Carver would serve a higher purpose.