Which major airline's logo was redesigned in 1968 by famed designer Saul Bass, featuring a distinctive 'widget' symbol that represented the Greek letter delta?

Commercial aviation has transformed transportation over the past century, with airlines developing distinctive brand identities to stand out in a competitive market. This trivia question explores a fascinating piece of aviation branding history that many travelers might not know despite seeing these logos frequently. Test your knowledge about how one major carrier's visual identity evolved through mergers, economic changes, and design trends.

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Delta Air Lines
American Airlines
United Airlines
Pan American World Airways