Calumet & Hecla, Inc.
Archival Resources
| Role | Title | Holding Repository | |
|---|---|---|---|
| referencedIn | Boyd, Gilbert W. 1905-1969. Gilbert W. Boyd Papers, 1942-1968. | Michigan Technological University, J.R. Van Pelt & Opie Library; Michigan Tech |
Bibliographic and Digital Archival Resources
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| Relation | Name | |
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| associatedWith | Boyd, Gilbert W. 1905-1969. | person |
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