In the early to mid twentieth century, the majority of the city’s libraries had live-in superintendents. Like the superintendents who still live in many of the city’s residential buildings, these caretakers both worked and lived in the buildings for which they were responsible. This meant that for decades, behind the stacks, meals were cooked, baths and showers were taken, and bedtime stories were read. And yes, families living in the city’s libraries typically did have access to the stacks at night—an added bonus if they happened to need a new bedtime book after hours.
There is also this:
The family, who were joined by Rose Mary’s younger brother Terrence in 1945, lived in the library until Patrick Thornberry retired as the building’s superintendent in 1967. Their home was in what the library now refers to as the “closed stack” (a locked stack reserved for rare books). While the closed stack is currently sealed off to daylight to protect its rare contents, when the Thornberrys lived in the library, it was a light-filled and vibrant space. But the family was by no means confined to their apartment. They also enjoyed a penthouse-level garden and after hours, access to the library’s stacks and large reference rooms too.