Air mail delivery (first): Plaque showing the location of in West Potomac Park in Washington, D.C.

plaque

This plaque in West Potomac Park, Washington, D.C., marks the site of the first air mail delivery in the United States. Located near the Tidal Basin and the FDR Memorial, it commemorates a key event in the history of American postal service and aviation. The plaque is accessible from Ohio and West Basin Drives SW and is near the Smithsonian Metro station.