In 1918, the United States Postal Service won the financial backing of Congress to begin experimenting with air mail service, initially using Curtiss Jenny aircraft that had been procured by the United States Army Air Service.
En 1918 o United States Postal Service gañou o apoio financeiro do Congreso para comezar a experimentar co servizo de correo aéreo, inicialmente usando avións Curtiss Jenny que foran adquiridos ao United States Army Air Service.