He produced adventure/historical titles for CEPIM's Un uomo un'avventura and, for the French publisher Larrousse, some episodes of Histoire de France en bandes dessinées and La Découverte du Monde.
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Toppi's works appeared on a host of titles in Italy and abroad: an incomplete list could include Linus, Corto Maltese, Sgt. Kirk and Il Giornalino in Italy.
Sergio Leone | Sergio Franchi | Sergio Ramos | Sérgio Mendes | Sergio Martino | Sergio Osmeña | Sergio Fabbrini | Sergio Aleati | Sergio Sollima | Sérgio Godinho | Sergio Corbucci | Sergio Santos | Sergio Pérez | Sergio Marchionne | Sergio Fiorentino | Sergio Badilla Castillo | Sergio Vargas | Sergio Tofano | Sergio Oliva | Sergio Mulko | Sergio Mora | Sergio Marchi | Sergio George | Sergio García | Sergio Donati | Sergio Dalma | Sergio Cragnotti | Sergio Vallín | Sergio Tiempo | Sergio Rossi |