Calumet & Hecla, Inc.
Archival Resources
| Role | Title | Holding Repository | |
|---|---|---|---|
| referencedIn | Hockings, William A. 1928-. William Hockings Research Papers, 1949-1983. | Michigan Technological University, J.R. Van Pelt & Opie Library; Michigan Tech |
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| Relation | Name | |
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| associatedWith | Hockings, William A. 1928- | person |
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