The document describes several artifacts related to the slave trade, including paintings, models, photographs, documents, and objects. Specifically, it mentions portraits of William Wilberforce, a model of a slave ship used by Wilberforce, photographs of freed slaves, a runaway slave poster, a Wedgwood medallion protesting slavery, documents registering and selling slaves, posters advertising slave sales, and slave collars. All of the artifacts provide historical evidence of the transatlantic slave trade and efforts to abolish it.