1. Section through high bookcase at first level reading room -- 2. Section through high bookcase at exits low wall diffuser -- 3. Section through high bookcases at existing high wall diffuser -- 4. Elevation of high bookcase -- 5. Section -- 6. Section -- 7. Section -- 8. Plan section -- 9. Section -- 10. Section -- 11. Elevation of wood screen (existing for reuse) -- 12. Detail at screen base -- 13. Section through new wood screen -- 14. Typical end at new wood screen -- 15. Flush end at new wood screen -- 16. Plan of gate -- 17. Elevation of gate -- 18. Plan of counter - staff room 101 -- 19. Section through counter -- 20. Plan of counter at room 101S - storage -- 21. Section through counter