Calumet & Hecla, Inc.
Archival Resources
| Role | Title | Holding Repository | |
|---|---|---|---|
| referencedIn | Koepel, Louis G. 1909-1998. Louis G. Koepel Collection, 1911-1978. | Michigan Technological University, J.R. Van Pelt & Opie Library; Michigan Tech |
Bibliographic and Digital Archival Resources
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| Relation | Name | |
|---|---|---|
| associatedWith | Koepel, Louis G. 1909-1998. | person |
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