tag:digital.library.illinois.edu,2005:/items/9e8a22e0-994e-0134-2096-0050569601ca-aMap of the United States' lead mines on the upper Mississippi River2022-09-15T18:31:47Ztag:digital.library.illinois.edu,2005:Item/699262016-11-30T19:19:20Z2022-09-15T18:31:47ZMap of the United States' lead mines on the upper Mississippi River5084 and 5160.University of Illinois at Urbana-Champaign Library