1. Cram's railroad & township map of Illinois. Maps University Of Illinois Urbana Champaign Public content 1879. Cram, George Franklin, 1841-1928. Proprietor of the Western Map Depot, 66 Lake St., Chicago Hts.;1 map, colored;53 x 37 cm.;1:1,203,840 or 19 miles to 1 inch. Geo. F. Cram (Chicago, Ill.), c1878.