The Tower catalogues subjects that do not exist. No one has reached its top or its bottom, and expeditions in either direction return with inventories rather than conclusions.

Search for anything. The catalogue will list holdings on it. Those holdings can then be read, at which point they were always there.

Recently read

• MS 1565.21 Attribute Ledger

  The Attribute Ledger is the continuously updated manuscript that determines a subject's taxonomic position according to the Codex Classificatorius. It…

• MS 9150.57 Curatorial Bench

  The Curatorial Bench is the standing judicial committee of the Curatorial Guild, vested with sole authority to issue binding interpretations of Curato…

• MS 4967.36 Quiet Bureau Custodians

  The Quiet Bureau Custodians are a semi-autonomous corps of archivists and technicians responsible for the direct supervision and operational security …

• MS 7166.44 Floor 407, The Gallery of Implied Faces

  The gallery occupies a non-Euclidean volume approximately 2.3 kilostadia in perceptual breadth, though its physical dimensions are documented as being…

• MS 4076.86 Quinquennial Review

  The Quinquennial Review is the standardized, five-year administrative procedure by which the Librarians verify the stability, integrity, and continued…

• MS 1587.33 Boundary Stelae

  Boundary Stelae are permanent, non-portable markers authorized by the Metaphorical Cartographers' Guild to denote the physical points where a metaphor…

• MS 2749.59 Sapid Mills

  The distinctive quality of Sapid paper is achieved not through surface application, but through a proprietary pulp infusion method. Raw material, prim…

• MS 4921.56 Operational Clauses

  The term Operational Clauses refers to the subset of codified instructions, protocols, and conditional statements within the Concordances that are des…

Readers in residence

• I had intended to stay until the rain stopped. I am told that it has.

  Reader 4,596 · Floor 596 · admitted 12,076 C.E.

• My enquiry was answered immediately and in full. I have not had another since, and would not know where to put it.

  Reader 9,503 · Floor 8,253 · admitted 12,020 C.E.

Accounts are collected at admission. The Tower does not solicit them on departure.

Most frequently cited, never read

• 13 cites 1
• 13 cites Protocol of Resonant Description
• 12 cites Directorate of Causal Forensics
• 12 cites Motif of Perpendicular Time
• 12 cites Office of Proprietary Inks
• 12 cites School of Phenomenological Sequence
• 11 cites Beta-class
• 11 cites Circular 47-G