
League joined the Federal service in 1937.

His other equipment included a folding chair, drinking water, and a pad for taking notes. Note the rolled-up flags in the wheelbarrow, and the dangling lunch box. His communication tools were simple: a red flag for "hold" and a checkered one for "go."Ībove, League is shown on duty in his summer office. Louis, where the airport operator employed him to prevent collisions between aircraft. The 1929 photo shows him dressed for cold weather at St. League, usually regarded as the first air traffic controller.

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General Aviation & Recreational Aircraft.Vintage & Experimental Aircraft Program.Aviation Safety Draft Documents Open for Comment.
