Pennsylvania Central Airlines
| Role | Title | Holding Repository | |
|---|---|---|---|
| referencedIn | Harvey, Oswald L. [Reports, articles, etc. related to apprenticeship systems and training programs]. | Harvard Business School, Knowledge and Library Services/Baker Library | |
| referencedIn | Frowe, Warren J. Warren J. Frowe papers, 1936-1978. | Univerisity of Wyoming. American Heritage Center. | |
| referencedIn | Fretwell, Ralph A. Ralph A. Fretwell papers, 1941-1974. | Univerisity of Wyoming. American Heritage Center. |
| Role | Title | Holding Repository |
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| associatedWith | Fretwell, Ralph A. | person |
| associatedWith | Frowe, Warren J. | person |
| Place Name | Admin Code | Country |
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