Cornelis (Kees) Koekkoek was born in Amsterdam on 8/9/1903 son of Marinus Adrianus Koekkoek (1873-1944) and Judith Koekkoek – Gerritsen (1881-1961). He was a painter, designer, lithographer and graphic. The father Marinus Adrianus Koekkoek was a descendant of an ancient dynasty of painters including the best-known landscape painter Barend Cornelis Koekkoek was the (1803 – 1862) (1). Marinus Adrianus was also a painter and artist. The family lived in Cornelis Watergraafsmeer, a district of Amsterdam. Like his grandfather and father Cornelis also devoted himself to painting: after high school he enrolled at the Academy of Visual Arts Arts in Den Haag. To deepen his art studies lived from 1918 to the 1926 a Berlino, where he attended the courses Akademie der Künste. Back in Holland, APPROACH already NSB National Socialist Movement (2) founded in Utrecht 1931 da Anton Mussert. Cornelis made several graphic works (3), under the name of Giving, also for the newspaper The New People (The new people) (4) organo del partito nazionalsocialista inglese NSNAP National Socialist Dutch Workers Party (5). Dutch central archive there are many jobs and posters Cornelis made for Nederlands Arbeidsfront (6) he National Jeugdstorm (7) and other state organizations to 1945. His posters, carrying the signature C. Koekkoek M. A. Zn. that meant for extended Cornelis Koekkoek Marinus Adrianus Koekkoek son, became very famous. Cornelis was considered the best graphic posters from the thirties and forties. After the war, like thousands of other Dutch, was arrested and interned. He spent almost two years in several detention accused of membership in the NSB. He was persecuted, tried and lost for some time the Dutch nationality. He was sentenced to three years probation, to pay a heavy fine and loss of civil rights for ten years. Practically starving, tried to survive by selling paintings and portraits for a little money to keep his first wife Wilhelmina Johanna Samuels, their daughter Margaret Judith and his second wife Anna Janke Oord. Despite a disease in one eye, Cornelis lived designing advertising posters and portraits on commission. In the fifties he painted many portraits in a very realistic. Negli anni successivi, perhaps bent the Zeitgeist, his style became expressionist and abstract. Cornelis died 3 February 1982 at the age of seventy-eight years.