“Swing made of an old rubber tire. Gibbs City, Michigan,” April 1937, by Russell Lee, via Library of Congress Prints and Photographs Division.
(You can pause on either picture by putting your cursor over the image and clicking on the ‘stop’ symbol.)
There’s another wonderful swing made from an up-cycled car part here on the blog Playscapes.
ADDENDUM: To see this type of swing in action, click here.