He is most commonly associated with his writing featuring the popular literary figure, Jens von Bustenskjold.
[3] He also wrote several popular novels and stories, mostly published as feuilletons in newspapers and magazines.
He is particularly remembered as the creator of the fictional character Jens von Bustenskjold from the rural valley of Oladalen.
Lybeck was the author of the series which was illustrated by Anders Bjørgaard (1891-1967) and appeared in Arbeidermagasinet from 1935.
The 1958 comedy film Bustenskjold by director Helge Lunde (1900-1987) was based on this series and had comic actor Leif Juster (1910-1995) playing the title character.