According to the Library of Congress, there was a serious scarcity of crude rubber, so reclaimed rubber made from scrap was required to meet demands. All Americans were encouraged to donate used or worn out rubber articles to the nation’s scrap piles.
As part of that campaign, Judy Canova, star of stage and screen, opened her personal salvage drive for scrap rubber in September 1942 by donating her personal slingshot to the drive. Behind here is an image I’ve seen before, but I’ve never seen it used as part of the ‘Save Rubber’ campaign.