5 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 7538.12 Floor 7,451
• MS 3256.08 Form 7,117-δ
• MS 3937.23 Office of Sealed Holdings
• MS 1173.78 Registry of Seals and Keys
• MS 9196.99 The Concordance of Open Doors

  The Concordance of Open Doors is the primary regulatory document governing the ontological and administrative status of all apertures within…