Comment: Organized under the auspices of the Comisión Nacional Pro-Referéndum, this international mail art exhibition and performance (titled "Por la vida y por la paz") served as a socio-political intervention. It was supported by various labor and artist unions, including AEBU, SUNCA, and AUAC (Asociación Uruguaya de Artistas de Correo). The event used the mail art medium to galvanize international solidarity during Uruguay’s democratic transition.