Fluorspar District of Illinois Historical Document Folder: Hill Property File: Illinois Fluorspar Investigations Hill Property Map.tif UID: 281
Dates
Dataset Reference Date
2015-09-28
Info Date
1944-07-01
Summary
Historical Fluorspar District Document from Industrial Mineral Section Records Folder: Hill Property File: Illinois Fluorspar Investigations Hill Property Map.tif Type: Map Author: Grogan, R. M. UID: 281
Summary
Historical Fluorspar District Document from Industrial Mineral Section Records Folder: Hill Property File: Illinois Fluorspar Investigations Hill Property Map.tif Type: Map Author: Grogan, R. M. UID: 281