Smith Hempstone, Oliver and Berkebile, Donald H. 1974. Wheels and Wheeling: The Smithsonian Cycle Collection. Smithsonian Studies in History and Technology, 24: 1-104. doi:10.5479/si.00810258.24.1
Horse-drawn commercial vehicles : 255 illustrations of nineteenth-century stagecoaches, delivery wagons, fire engines, etc. / edited by Don H. Berkebile