To Ana Spinu - Romania

http://romailart.wordpress.com/my-red-number/

To Stefano Sini Fossiant

Spedite a Stefano Sini Fossiant : Mail art in the world.

http://mailartfossiant.blogspot.com/

To Nataša Stanišić - Bosnia and Herzegovina

Cartolina inviata a : Nataša Stanišić - Bosnia and Herzegovina
THE UNIVERSAL LANGUAGE ART PROJECT
http://universalartlanguage.blogspot.com