This article uses an interdisciplinary approach to present and analyze information on the smallest manifestations of popular culture in Latin American countries: postage stamps. The disciplines involved are semiotics (the linguistic study of signs), history, politics (internal and international), and popular culture. The project studies how these postage stamps carry significant messages, including expressions of nationalism, politics (national and international), propaganda, and cultural identity. The article begins with an overview of Latin American postage stamps, with an emphasis on internal and international politics. The latter category focuses on several cases of inter-country tension in which postage stamps have played a role.