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 2358.65 Bureau of Sequence Reconciliation
• MS 9113.70 Floor 407, “The Hall of Mirrors”

  Floor 407, “The Hall of Mirrors” is a floor of the Tower given over almost entirely to reflective surfaces, and to the offices and instrumen…

• MS 2731.14 Landing of Unfinished Symphonies

  The Landing of Unfinished Symphonies is the broad, shallow platform at the head of the western stair of Spiral of Unfinished Symphonies, fro…

• MS 4967.12 PHSU-γ-7