in quest of the best web sites for collectors
Balloons on Stamps
Related pages:
Airships Topic
An overview of the balloon stamps collection of Wilma and Erwin Pellegrom. You can also view their balloon-themed collections of books, postcards, photographs, coins, etc.
Markus Wydera's site has sections on World History of Ballooning, Hot Air Balloon Championships, Gas Balloon Championships, and Balloon Mail since 1945 in Czechoslovakia and in Poland - all superbly illustrated with stamps, covers and postmarks. A very informative site.