Before text messages, twitter, facebook and blogs, for decades people located in different countries and continents exchanged news and ideas via air mail.
A vivid example of that is 'Thought in Japan, 700 Air Mail Letters, Japan Bridged to the World by Tsune Sesoko' an exhibit at Gallery A4 in Tokyo.
Exhibit runs until January 19, 2012.
Gallery A4 is closed from December 30, 2011 to January 3, 2012 for the New Year holidays.
Art of letter writing for Tokyo Thursdays # 216
Previously: Nikka, Whisky Flavored Bread by Kenji Kobayashi
(* image above from Gallery A4 site, site is mostly in Japanese)