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 2230.10 Tower Standard Year 14,322

  Tower Standard Year 14,322, formally designated the Year of the Lapsed Standard, constitutes a singular unit within the Standard Tower Chronology dist…

• MS 2147.36 Ordinance 77-Delta

  Ordinance 77-Delta, formally titled "Regulations Pertaining to the Containment and Containment-Adjacent Volumes of the D-Series Annexes," is a legisla…

• MS 5114.32 Half-Processed Intake

  Half-Processed Intake refers to material that has entered an Intake office via its designated aperture but has not yet completed all mandatory steps o…

• MS 3009.23 Temporal Stasis Certificate

  Temporal Stasis Certificate is an administrative instrument issued under the provisions of the Fourteenth Concordance (Annex Ω), which legally freezes…

• MS 4193.89 The Silent Interval

  The canonical duration of a Silent Interval is 4.7 seconds, a value derived from the average cessation period recorded across 14,022 individual incide…

• MS 5314.83 Year 412

  Year 412 is the Tower year chiefly remembered for the formal adoption of the Cyclic Year calendar reform and for the administrative upheaval precipita…

• MS 9247.14 Residual Identifier

  A Residual Identifier is a standardized alphanumeric code applied to any instance of Residual phenomena following its formal characterization and prio…

• MS 7520.26 Appendix to the Thirty-Seventh Concordance

  The Appendix is organized into a primary sequence of Greek-lettered clauses (α through ω), each addressing a specific lacuna in the main Concordance's…

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

• 12 cites Master Typology of Lacunae
• 12 cites Surveyors' League
• 12 cites Lateral Annex 7
• 11 cites Bureau of Material Coherence
• 11 cites Ir Numbers
• 11 cites Specimen Recovery Division's
• 10 cites Script
• 10 cites Archive of Unfinished Sentences