Since 1905, original 1:1 cartoons executed by the company Binsfeld have been retained onsite. The collection constitutes a valuable historical resource, documenting the evolution of twentieth-century design and manufacture of stained glass windows. Many of the windows produced in Trier for the surrounding region and for export throughout the world can still be seen in situ. Many of the drawings have been photographed and cataloged and present a fantastic opportunity for Art Historicans and Conservatiors.