Charmayne & Bob send this photo from the West Coast of the USA. The World Kite Museum in Long Beach, Washington state, has what they call an Arctic Mail kite. From the museum's newsletter:

"Airmail kites were vital in picking up official mail from remote sites in the Aleutians and South Pacific where there were no landing strips. They were also used to transfer messages between ships at sea. A cable with a package of papers attached was strung between two kites. A plane flying overhead would catch the cable with a long hook and retrieve the mail."