Ex Libris: Die Public Library von New York

Frederick Wiseman shot 150 hours of footage and crafted a 197 minute film in approximately one year of editing. The movie ended up taking place during seven days, which fits the number of days the New York Public Library opens its doors during a regular week, with the last day, Sunday, being the one in which the Library facilities are opened for less hours. "Sunday" is also the day with the least minutes in the structure of the film: 19 minutes, compared to the approximate 30 minutes per day for the previous six days of the week.