Colour photographs
© Dombauhütte Köln / Photo: M. Unkelbach/J. Rumbach
Please address enquiries to the Dombauarchiv Köln. Please state briefly in your mail what use you intend to make of the picture.
Infrared reflectograms
Please address enquiries to the Rheinisches Bildarchiv Köln. When ordering, please give the following reference: rba_d037769_01 to 05