Gunnar Christenson studied at the Technical School in Stockholm 1914–1919 and at the Royal Academy of Fine Arts 1920–1921.
During the 1920s, Christenson traveled on study trips around Europe, and in the late 1920s he worked as a drawing teacher at the school Helsingborgs Läroverk. From the buildings top floor you have a nice view of Kärnan, a medieval tower that once was part of a larger fortress. And it was probably there and then he drew his poster over Kärnan and the landscape up towards Mölle.
Christenson later on combined his teaching with a successful artistic career (he has held several exhibitions and is represented in several museums).
