00640cam a2200205u 4500 gs 15000007 DLC 20260227111317.0 850624s1914 iluabf 000 0 eng gs 15000007 DLC CarP DLC n-us-il TN453.I3 C6 Cox, Guy Henry. Lead and zinc deposits of northwestern Illinois, Urbana, State geological survey, University of Illinois, 1914. 120 p. plates, 4 fold. maps (in pocket) diagrs. 24 cm. Lead mines and mining Illinois. Zinc mines and mining Illinois. 25455 25455