2 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 3064.83 Format D: Request for the Re-Classification of Cargo
• MS 9723.90 Twelfth Adjustment of the Auxiliary Pendulum Network

  The Twelfth Adjustment of the Auxiliary Pendulum Network was a formal recalibration event for non-Primary pendulum arrays on sub-level chron…