Keystone Driller Co. (Beaver Falls, Pa.)
Archival Resources
| Role | Title | Holding Repository | |
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| referencedIn | Ruttenberg, Harold J. Harold J. Ruttenberg papers 1934-1998 [papers] | Historical Society of Western Pennsylvania, Heinz History Center Detre Library and Archives |
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| Relation | Name | |
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| associatedWith | Ruttenberg, Harold J. | person |
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