A view of the north-west corner of Demel Square on market day. Karl Prochaska's bookshop, (who was the emperor's -royal court bookseller and printer) was situated in tenement-house nr 6. Close to it, there was a tenement-house from 1653, with its characteristic bay window, belonging to the Schroeder family. 

H. Wawreczka, J. Spyra, M. Makowski "Cieszyn, Czeski Cieszyn na starych widokówkach i fotografiach" WART, Nebory 1999 r.