The underground rail road : a record of facts, authentic narratives, letters, &c., narrating the hardships, hair-breadth escapes and death struggles of the slaves in their efforts for freedom, as related by themselves and others, or witnessed by the author ; together with sketches of some of the largest stockholders, and most liberal aiders and advisers, of the road / by William Still ... ; illustrated with 70 fine engravings by Bensell, Schell and others, and portraits from photographs from life.