Doris Dobbel was a Belgian gag-a-day comics series, written and drawn by Marc Sleen, between 8 April 1950 and 1965 and published in the magazine De Middenstand. On 1 January 2030, all comics series by Marc Sleen, including Doris Dobbel, will enter public domain, in accordance with the Marc Sleen Foundation. Source: Wikipedia (en)