The Good Lord Bird by James McBride
Fulfills 'a book by a person of color' category of the 2017 Reading Challenge. Story about Henry, a slave child, whose father is killed when famed abolitionist John Brown gets in a fight with his slave owner. Brown mistakes Henry for a girl and frees 'Henrietta' by taking 'her' with him on the run with his 'army'. 'Henrietta' (later nicknamed Little Onion) continues hiding his true identity in an effort to survive, and in fact does survive when he ends up with Brown at the historic raid at Harper's Ferry.
I know it is a work of fiction, but it is interesting reading about the area that John Brown traveled. I have very early memories of 'John Brown's Cave' on our Nebraska City visits.