The copyright of Muller-Ury's work expired in July 2017, and therefore the copyright of located pictures by the artist in the present online catalogue (which follows the biographical section) belongs to the present owners. Because so many of Muller-Ury's works remain unlocated, it has been necessary to reproduce - with permission - photographs from the artist's papers in the Muller-Ury Stiftung in Hospental, Switzerland; unfortunately, many of these photographs, by some of the famous photographers of works of art working in Muller-Ury's lifetime - such as Ferd. Stark, Mary Hopson, Anderson, and Peter Juley - are brittle, faded or damaged. Similarly, the editor has thought it better to reproduce photographs of varying quality here (some of which are little more than old snaps provided to the editor by their owners over the last thirty years) in order to provide as complete a record of the artist's work as possible. It is hoped that many of the present owners of the artist's works will contact the editor (there is a form on the ABOUT page), provide him with details, documentation or other valuable information, and perhaps make available professional colour reproductions for inclusion on this website.