Lead-Zinc District of Illinois Historical Document Folder: Structure - General NW IL and Vicinity File: NW Ill References Structure.pdf UID: 975
Dates
Dataset Reference Date
2015-09-28
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Structure - General NW IL and Vicinity File: NW Ill References Structure.pdf Type: Memorandum/Notes UID: 975
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Structure - General NW IL and Vicinity File: NW Ill References Structure.pdf Type: Memorandum/Notes UID: 975