9 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 0867.50 Annex of Luminous Negation (Floor 7,401, Third Annex)
• MS 1425.89 Aural Lacunae Archive

  The Aural Lacunae Archive is a specialized repository on Floor 9090 administered by the Aural Division of the Curators of Lacunae, dedicated…

• MS 6516.44 Compound Bittern
• MS 5762.90 Correlation 9099-δ ("The Silent Chord")
• MS 2700.54 Guild Jurisdiction
• MS 4436.84 Guild of Senior Indexers
• MS 4806.92 Node Clusters
• MS 9587.56 Threefold Grip
• MS 7847.02 Σ(Ln × Dt)