Carl Nesjar

Carl Nesjar (né Carlsen; 6 July 1920 – 23 May 2015) was a Norwegian painter, sculptor and graphic artist.

One such work was Picasso's Regjeringskvartalet murals which are located in Oslo, the city where Nesjar lived for most of his life.

Nesjar collaborated with architect Erling Viksjø on a particular concrete sculpting method called Betograve.

The introduction of this technique to Picasso led to a lasting collaboration between the two, starting with the realization of a version of the sculpture Tête de femme in gravel and concrete in 1958.

First a wooden frame was constructed and filled with dark rock materials and then covered with concrete.

Designed by Pablo Picasso , executed by Carl Nesjar, Head of a Woman , designed 1962, executed 1971, at the Princeton University Art Museum
Regjeringskvartalet , Oslo (2005 photo), with mural sculptured by Nesjar after Picasso's design.