U.S. Air Mail Field in Elko, Nevada, postcard featuring a hangar painted with "U.S. AIR MAIL ELKO NEV." across the facade. A De Havilland DH-4 biplane, numbered U.S. MAIL 316 is also seen. #USAirMail #ElkoNevada #AviationHistory #Biplane #DeHavillandDH4 #Nevada #Travel #Avgeek #Postcards #Ephemera