On every door was the same paper. Here’s what came to mind when I think of papers attached to a door — Martin Luther’s 95 theses or doors marked by the blood of the lamb so God would “Passover” the homes of Jews in the time of Moses or eviction notices from a landlord.
Fortunately, on closer inspection, nothing so ominous was being announced. Just informing the residents that their front doors were to be painted next week.