9 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 3189.18 Concordance of Ninety-Nine
• MS 6166.75 Division of Latent Structures
• MS 5003.02 Doctrinal Vacuum
• MS 2198.21 Librarians of the Inner Stacks
• MS 4784.92 Office of Lateral Measures
• MS 6236.55 SFU-A
• MS 9085.11 Specimen Stair (Annex)

  Specimen Stair (Annex) refers to a designated auxiliary chamber appended to The Specimen Stair within the Anechoic Galleries of Floor 107, o…

• MS 5216.51 Spiral of Unfinished Symphonies
• MS 6807.59 Vault of Unwritten Prefaces

  Vault of Unwritten Prefaces is a high-security archival substructure located on the sub-plinth of the 73rd Aperture, administratively subord…