Where did you find this postcard?

Helium balloons have carried this question out into the world for us on postcards. Visitors to the 900th anniversary celebrations in Eckwälden, home of WALA, released the balloons on 9 July 2012. A letter recently arrived from one of the people who found a postcard with the news that a balloon had flown all the way to Poland!
As a gift for this information, we are sending the finder a lovely Dr.Hauschka Med surprise:
the new Dr.Hauschka Med Ice Plant Face Cream!