Feedback Letter-box (Clemente Padin)

Feedback Letter-box (Eugenio Miccini)

Feedback Letter-box (Fulvio Ferrari)

Feedback Letter-box (Giancarlo Politi)

Feedback Letter-box (Herman Damen)

Feedback Letter-box (Horst Tress)

Feedback Letter-box (J. H. Kocman)

Feedback Letter-box (J. O. Mallander)

Feedback Letter-box (János Urbân)

Feedback Letter-box (Jarosław Kozłowski)

Feedback Letter-box (Jiří Valoch)

Feedback Letter-box (Jochen Gerz)

Feedback Letter-box (Joseph Beuys)

Feedback Letter-box (Klaus Groh)

Feedback Letter-box (László Beke)

Feedback Letter-box (Natalia LL)

Feedback Letter-box (Paul Neagu)

Feedback Letter-box (Richard Kriesche)

Feedback Letter-box (Robin Klassnik)

Feedback Letter-box (Shu Takahashi)