Black and white photograph of Stapleton International airport from a high vantage showing the tail and wing of a United Airlines plane with the number "N8038U" on the side. Lines of people and luggage cars stand on the tarmac beneath the plane with a large building and control tower behind them.

Stapleton International was Denver's first international airport and served as Colorado's primary hub for air travel from its opening in 1929 to its close in 1995. (Denver Master Community Association)