6 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 5091.16 Fifth Spiral
• MS 0813.96 Gilded Quire

  The Gilded Quire is a sound-damped scriptorium established in 1847, located adjacent to Floor 451. It was commissioned under Ordinance 707 t…

• MS 9161.26 Master Indices

  Master Indices are the primary, concordant systems for the classification and location of holdings within The Tower. They are distinct from …

• MS 0189.38 Ontological Dampening Field
• MS 4309.84 Osric Fell
• MS 7186.80 Silas the Unseen

  Silas the Unseen (formal designation: Archival Subject Δ-77/Θ) refers to the persistent bibliographical presence attributed to an individual…