1. North America : sheet IX, parts of Missouri, Illinois and Indiana Maps University Of Illinois Urbana Champaign Public content 1833. J. & C. Walker (Firm). Relief shown by hachures.;1 map, hand colored;20.5 x 35.4 cm.;ca. 1:1,750,000;C. Knight, 1846-51. -- vol. 2, no. 138. Charles Knight & Co. (London).