3 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 3638.25 Concordance of Printers' Marks
• MS 7688.19 Office of Archival Harmony
• MS 3951.93 Shelf Coordinate Assignment

  Shelf Coordinate Assignment is the administrative act by which a holding, having been triaged and issued a Provisional Shelf-Mark, is bound …