• Karikatura no. 1 

        Contributor:Buttner, Helmut Feliks
        Date:1994
        Artist's information: http://lib.colostate.edu/posters/results-artists.php?id=130
      • Galeriefest 

        Contributor:Buttner, Helmut Feliks
        Date:1994
        Artist's information: http://lib.colostate.edu/posters/results-artists.php?id=130