Publication in artist's monograph

Last week I received a nice surprise: Dutch painter Rein Pol (above on the right) asked me if he could use this image in a monograph about his work. I took the photo just before the academic remembrance of Henk Vroom (see this post) in which the painting was going to be revealed. Of course I obliged. This honour tickles me to bits and I am very pleased with his request.
Pictured on the left is a collegue of mine.