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Guthman U-42
Object/Artifact
-
Radio Alpha
Image: Radio's Master Encyclopedia, copyright 1939
Name/Title
Guthman U-42
Description
Preselector
Category
Other
Made/Created
Manufacturer
Edwin I Guthman & Company
Date made
1939
General Notes
Note
Radio News, Sep 1939, p. 48. Radio's Master Encyclopedia, copyright 1939, p. H-121.
