 There, he began what would become a long collaboration with the publisher Nerbini, initially as a cartoonist for the satirical weekly "Il 420" and as an illustrator for their novels.Toppi designed the headline logo and contributed comics to the "Topolino", a weekly children's magazine themed on the Disney character Mickey Mouse.He also contributed to other Nerbini magazines such as "L'Avventuroso", which was published starting from 1935.