Volume 4, Number 27 original: "t.º 4. n.º 27"; 't.º' is an abbreviation for tomo (volume) and 'n.º' for número (number).

56-4-10 This alphanumeric sequence is a shelfmark, a "postal address" for the book that tells the librarian exactly which room, press, and shelf the volume occupies.

DER Number 12,682 original: "DER n.º 12682"; 'DER' likely refers to a specific administrative department or a historic inventory sequence.

Revised original: "Revisado"

May 20, 1968 The date the manuscript was last officially inspected or re-cataloged by the library staff.