5 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 7821.25 Aperture Census

  Aperture Census is the general designation for the recurring enumeration of apertures — doors, windows, hatches, vents, embrasures, and comp…

• MS 2897.04 Entry into the Master Log

  Entry into the Master Log is the formal act by which a record first becomes admissible within the Tower, distinct from the record's later am…

• MS 5968.06 Observer of Absence (Vector Beta)
• MS 5809.22 Silent Medium
• MS 8158.23 The Chamber of Unspoken Rebuttals (Floor 1888)