Public domain
Civilian defense. War Emergency Radio Service. Commercial short wave radio transmitter are made into mobile two-way War Emergency Radio Service sets for Civilian Defense by patriotic radio "hams" who not only install and operate the sets, but frequently contribute their own equipment. Powered by the
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineCivilian defense. War Emergency Radio Service. Commercial short wave radio transmitter are made into mobile two-way War Emergency Radio Service sets for Civilian Defense by patriotic radio "hams" who . 1941-01-01. United States. Office Of War Information. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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