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Investigation of the Blewett Zinc-Lead Deposit, Jo Daviess County, Illinois
Report issued by the Bureau of Mines over studies conducted on the Blewett zinc-lead mine of Illinois. Samples obtained through churn-drill and diamond drill holes are analyzed. This report includes tables, maps, and illustrations.
Date:
September 1948
Creator:
Holt, Stephen P.
Object Type:
Report
System:
The UNT Digital Library
[Map of upper Illinois]
Map shows early nineteenth century northern Illinois township grid, existing towns, roads, marshlands and flood plains. Inset: "Vicinity of Galena, the lead region, and part of Wisconsin Territory." Includes notes on historical events with dates and text: "Public lands" and "Land districts." Scale not given.
Date:
1833
Creator:
unknown
Object Type:
Map
System:
The Portal to Texas History