The first volume of the catalogue of works by the artist Erwin Bowien was published in 1999 by the Freundeskreis Erwin Bowien. Since then, several hundred more works have been discovered. The Foundation is now taking over from the Freundeskreis Erwin Bowien e. V. the task of continuing the catalogue of works.
At present there is no edited catalogue of the works of the artist Bettina Heinen-Ayech. In the meantime, Ms Ulrike Friedrichs, Solingen, has begun an initial inventory. The Foundation supports her in continuing the catalogue of the painter's works.
There is currently no edited catalogue of the works of the artist Amud Uwe Millies. Dr Dietmar Elke and Ms Monika Pavlou have been painstakingly compiling an initial inventory for several years. The Foundation will now continue the task.