File talk:Columne pro Caelo - Heinz Mack.jpg

This file has been used in: Gesine Borcherdt (2011-03-08). Happy Birthday, Heinz Mack! (in de). artnet. Retrieved on 2011-03-08. Detailpage

This file has been used in: Köln (in en). continuous construction (continued) (2009-06-15). Retrieved on 2011-09-30. No name, no license 2011-08-30: Blog comment added

This file has been used in: Римско-германский музей, история создания и музей об истории Кельна (in ru). mosintour.ru. Retrieved on 2012-04-30. No name, no license

This file has been used in: Himmelssäule (in de). cologne.cityseekr.com. Retrieved on 2013-10-27.