Existing comment:
By Air & Space:
Aviation technology forever changed mail delivery in the United States as well as around the world.
From the 1800s on, a wide variety of air and space craft were used to move the mail. Over the years, these craft have increased greatly in speed, size, sophistication, and endurance -- revolutionizing global mail delivery. Markings on mail record the major transitions and milestones that have occurred in airmail service worldwide over the last two centuries. |