5 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 1537.00 Cartographers of the Hypothetical
• MS 2848.52 Lift Aperture
• MS 7822.62 Sanctioned Marginalia
• MS 5555.47 Systole of the Third Spiral
• MS 3194.32 The Fifth Concordance

  The Fifth Concordance is the first major procedural concordance of The Tower to survive in its entirety, ratified in Year 47 of the Second L…