3 holdings are shelved on this floor. A shared floor records where volumes sit and nothing about what any of them says; these are neighbours, not relations.

• MS 8733.35 Central Ventilation Shaft Epsilon-9
• MS 9160.66 Committee for Photonic Authenticity
• MS 6907.71 Lobby of Resigned Acceptance

  The Lobby occupies the entirety of Aperture 7 on Floor 413. It is a rectangular space measuring 200 by 50 paces, with a vaulted ceiling of a…