" covering ten to twenty miles a day. The pregnant women complained desperately. The Georgia-man rode on. After crossing the Potomac, he moved Ball, who was physically the strongest of the men, from the middle of the chain and attached his padlocked collar to the first iron link. With Ball setting a faster pace, the two sets of double lines of people hurried down the high road, a dirt line in the Virginia grain fields that today lies under the track of US Highway 301. "

― , The Half Has Never Been Told: Slavery and the Making of American Capitalism