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 0746.49 Guild of Resonant Masons

  The Guild of Resonant Masons is a recognized administrative body within The Tower responsible for the measurement, construction, and harmoni…

• MS 8068.22 Master Log
• MS 1656.10 The Aperture Test
• MS 4524.94 West Lightwell

  The West Lightwell is an aperture and atmospheric phenomenon located within the West Helical Staircase, serving as the sole source of illumi…