P. V. H. Weems tutored Charles Lindbergh and other air navigation pioneers in new techniques of celestial navigation. Weems improved the processes and equipment for fixing position. He also established programs and schools to educate many of the most influential aviators of the 1930s. His greatest legacy was influencing the air navigation programs of U.S. airlines and the military. His techniques became the standard for long-range navigation for three decades.

Includes index.