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Filter: Subject of aircraft industry
| Date: | 09 14 1920 |
|---|---|
| Description: | Letter from Phil A. Grau, Business Manager for the Milwaukee Association of Commerce, to the Secretary of State for Illinois (Louis L. Emmerson), endorsing... |
| Date: | 09 13 1920 |
|---|---|
| Description: | Letter to Alfred Lawson from Otto Praeger, the second assistant Postmaster General, accepting Lawson's proposals for carrying air mail along three routes: ... |
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