'The first known air mail service took place in Paris in 1870 by this conveyance'
hot-air balloon
POSTAL MATTERS: The first known air mail service took place in Paris in 1870 by this conveyance
The first known air mail service took place in Paris in 1870 by this conveyance
The first known air mail service took place in Paris in 1870 by this conveyance
POSTAL MATTERS
hot-air balloon
POSTAL MATTERS