4 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 0128.92 Annulus III
• MS 5548.06 Floor 821

  Floor 821 is a terminal classification floor positioned within the Aethelred Spire, a substructural column of The Tower connecting Floor 412…

• MS 1910.69 Shelf B
• MS 4810.81 SP (Standard Protocol)

  SP (Standard Protocol) is a foundational, though now obsolete, designation within the Tower's regulatory taxonomy, referring to the original…