Eighty years ago, domestic radio production had been shut down for over a year, and there would be no new radios for the duration of the war. Therefore, it was every American’s patriotic duty to keep their current radio in working order.

In this ad in the June 1943 issue of Radio Retailing, the makers of Tung-Sol tubes was making available to dealers this display of booklets, containing hints for consumers on how to keep their radio working. The ad noted that many Tung-Sol tubes were available to dealers, so that if repairs were needed, they were probably possible.