More to explore:
art deco - U.S. postage stamp commemorating the 1939 New York World's Fair, 1939.
#ArtDeco first appeared in France after World War I, internationally in the 1930s and 40s. It is an eclectic style that combines Traditional Craft motifs with Machine Age imagery and materials, often characterized by rich colors, bold geometric shapes, and lavish ornamentation
United States 1939, Trylon & Perisphere at New York World's Fair Art Deco stamp
Ok, I previously said I didn't know what this was or what it meant. Guess my brain was asleep. It's a stamp, from the Democratische Deutsches Republik, aka East Germany! Thanks to the comments for jogging my Deutsch memory! :)
Israel Postage Stamp: Conquest of the Desert by karen horton, via Flickr
Vintage Postage Stamp: little boy, China 1963, part of the Children's Day series
Israel Postage Stamp: Arbor Day bird singing (via Karen Horn).
c. 1959, in commemoration of Tunisian Red Crescent Day designed by Ali Bellagha
Russia postage stamp: bombs over city
1960 romanian stamp - international festival of puppet theatre, design by e. conovici
I wish the U.S. Postal Service would pay homage to really good design more often. Look at these great UK stamps.
psychedelic arbor day stamp from israel 1975
Israel Aviation Stamp 1959
United Nations Stamp