The three-story fireproof stacks are housed in a modular iron-and-glass wing designed initially to hold 100,000 books--but also to be continuously expandable, one bay at a time, with a movable south wall.
The three-story fireproof stacks are housed in a modular iron wing, with skylights and glass-block floors to help illuminate the lower levels. It was designed to initially hold 100,000 books--but also to be continuously expandable, one bay at a time, with a movable south wall.