Architectura de postium seu portalium ornatu vario is the full title of my friend the old book. Translated from latin this means as much as: the architecture of doors and portals and their various ornaments. The authors name was Wendling Dietterlin he lived from 1550-1599 around Strasbourg. He worked as a painter and construction theorist….
here the book shows signs of becoming wet at some point during its life, as the ripples in the paper suggest here you can see that the book has been used heavily throughout its life, as the greyish stains on all pages outside bottom corner would suggest