Période

3 résultats pour : bureau of air commerce

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Washington
UMG23A56_042

Washington

Worker operating a new radio teletypewriter service which allows for instantaneous transmission of written records without the aid of wires, has been perfected by the experts of the Bureau of Air Comm...
UMG21A22_093

Worker operating a new radio teletypewriter servic...

Sterman-Hammond Y-1S Aircraft
UMG20A17_383

Sterman-Hammond Y-1S Aircraft