The study-book of mediæval architecture and art; being a series of working drawings of the principal monuments of the middle ages. Whereof the plans, sections, and details are drawn to uniform scales (1868)
King, Thomas H., architect · London, H. Sotheran and Co. · leaf 21
ERFURT PI 3 4- PI 3 (Cathedral e) T. IP Eng, Arch te Bruges 303