Explore images highlighting the cross-country drive of Dr. Horatio Nelson Jackson, the first person to drive across the United States in a motor vehicle, or “horseless carriage,” as it was known in 1903. When Jackson embarked on his adventure there were only 150 miles of paved roads in the United States. As a result, planning and preparation for the trip were necessary for success. Jackson's trusty bulldog, Bud, and a co-driver named Sewall K. Crocker joined him on the journey. Jackson named his automobile "The Vermont," after the state in which he lived. View images of Jackson's car, a map of the trip, Jackson himself, and Sewall Crocker.