Career
He created posters (), still life and landscape paintings, figural compositions. Marek published essays about art: Od Hogartha do Bacona (1973), Romantyzm, klasycyzm i z powrotem (1976). He also wrote a two-part autobiography, Studium do autoportretu (1980), which has recently been republished in its full trilogy form by the publishing house Oficyna Wydawnicza Kucharski.