Samuel Torres de Carvalho, better known as Sam, became a very successful Portuguese comic artist/cartoonist after the revolution of April 25, 1974. He used a personal, almost scratchy style, in which he created stories based on real events, such as in the series 'Guarda Ricardo' which he made from 1974 until his death in 1993. In this series, he commented on the revolution and the changes in Portuguese society.
Sam started his career in 1968 in the French magazine Plexus. In his career he created a large variety of characters, including 'Adolphe et Marguerite,' 'Bartolomeu,' 'Filomena' and 'Heloísa'.