J. Peckham plate, "Fossil footmark," 1841
J. Peckham plate, "Fossil footmarks and bones," 1841
J. Peckham plate, "Fossil footmarks, rain drops 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
Orra White Hitchcock plate, "Feet and Tracks of Living Animals," 1841
Orra White Hitchcock plate, "Tracks of living animals," 1841