For a little more than 60 years, from 1904 to 1967, St. Louis was considered the world’s air capital for balloon racers, parachutists, airship aeronauts, air-traffic controllers, scheduled airlines, solo-flight adventurers, fighter pilots, and astronauts. At many times, the United States has led the world in aviation development and technology, and St. Louis was one of the biggest contributors with many aviation firsts. A U.S. president first flew in an aircraft here. St. Louis can arguably be credited with the world’s first parachute jump, along with the world’s first air-traffic controller. The city was the epicenter for international balloon racing, and of course most people know that the city was home to Charles Augustus Lindbergh. The Cold War and subsequent conflicts might have turned out quite differently if a St. Louis aircraft manufacturer had not existed. The world’s largest airline may have never gotten off the ground if not for a U.S. mail contract that was awarded to a St. Louis company in the mid-1920s. This book provides a brief view of these firsts in aviation, as well as the development and impact of aviation in the city and beyond.