This source exemplifies he collective abolitionist idea that slaves are men and humans too. Followed by a verse by J.G. Whittier, it shows a man kneeling asking for freedom.
Engraving published as frontpiece of book "Trial and imprisonment of Jonathan Walker: at Pensacola, Florida, for aiding slaves to escape from bondage." Published Boston, at the Anti-Slavery Society Office, 25 Cornhill, 1848