J. Peckham plate, "Fossil footmark," 1841
J. Peckham plate, "Fossil footmarks and bones," 1841
J. Peckham plate, "Fossil Footmarks, Scale 1/2 inch to the foot," 1841
J. Peckham plate, "Fossil footmarks," 1841
J. Peckham plate, "Sauroid footmark," 1841