2 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 1119.45 Doctrine of Irreversibility

  The Doctrine of Irreversibility is a foundational administrative principle governing the permanent closure of apertures, stairwell closures,…

• MS 3688.94 Maintenance of Architectural Silence

  The Maintenance of Architectural Silence constitutes a specialized procedural discipline within the Office of Architectural Permanence, dedi…