Fluorspar District of Illinois Historical Document Folder: Minerva Oil Co File: Minerva Mine.tif UID: 367
Dates
Dataset Reference Date
2015-09-28
Summary
Historical Fluorspar District Document from Industrial Mineral Section Records Folder: Minerva Oil Co File: Minerva Mine.tif Type: Map Author: Grogan, R. M. UID: 367
Summary
Historical Fluorspar District Document from Industrial Mineral Section Records Folder: Minerva Oil Co File: Minerva Mine.tif Type: Map Author: Grogan, R. M. UID: 367