A new type of U.S. dirigible known as "blimps", at Goodyear Tire and Rubber Co.'s aviation field. These airships are held in shape by the gas pressure within, allowing for flights lasting up to six hours. Photograph taken by Goodyear Tires Rubber Co. on August 1, 1918.

Royalty-Free Standard Commercial licenses are granted for worldwide, non-exclusive and perpetual use, unless specifically noted otherwise. All Royalty-Free transactions are final. The Royalty-Free Standard Commercial license has no limitations and covers up to 15 users.