Pennsylvania Railroad Company. Altoona Test Plant.
Archival Resources
| Role | Title | Holding Repository | |
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| referencedIn | Keller, William McKinley, 1901-1974. Papers, 1920-1974. | Hagley Museum & Library |
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| Relation | Name | |
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| associatedWith | Keller, William McKinley, 1901-1974. | person |
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