From the National Humanities Center website:

Visual imagery played a major role in the anti-slavery movement. From the iconic image of a kneeling slave asking "Am I Not a Man and a Brother?" to images of family separations through sale at auction, images were an important weapon in the arsenal of abolitionist activity. This seminar will look at some of the imagery created in support of anti-slavery activities. How did the imagery evolve? What were the major themes? What were the iconic images of slavery? And how, then, did artists portray freedom? What was the relationship between anti-slavery imagery and slave narratives and abolitionist writing, including Uncle Tom's Cabin?