6 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 3162.88 Floor 4021
• MS 0313.53 Musical Notation for Non Music

  Musical Notation for Non-Music refers to any formal system of signs, sigils, or diagrams developed within The Tower for the purpose of catal…

• MS 0927.23 Office of Sustained Lamplight
• MS 7651.54 Silent Schism

  The Silent Schism was a prolonged period of administrative non-cooperation that occurred concurrently on Floors 1,447, 4,008, and 17,004 bet…

• MS 0035.92 The Branch of Textual Cohesion
• MS 9202.61 “Soporific Spore Cluster (Genus: Aspergillus)”