Unique identifiers are assigned for each digital object. A digital object may be a book, map, manuscript, etc. The digital object identifier is comprised of two parts:
Project id 2digits: aa Americas Archive (use lower case)
Object id 5digits: 0000# (use leading zeros – allows for maximum of 10,000 items). A sequential number is manually assigned by scanning operator to each document in order of scan.
Note: In this manner, all image files for any particular digital object will be linked together by the same identifier number. This will aid in pagination for layout and navigation of final multi-part object.
The filename for individual image files is composed of two parts:
Prefix - the digital object identifier number
Suffix - page number.
This number should directly correspond to the actual page order of the physical document. This will:
Aid in the online arrangement of images in the correct order
Aid in identifying the specific page number of the object
Note on pagination for printed text: The general practice is to assign a number that matches the page number as printed on the original document. Some historical texts used a variety of numbering styles or symbols (e.g. Roman, Arabic, etc). Sometimes the numbering may be inconsistent within one text. Please consult the project coordinator if you have any questions on determining suffix numbers.
Rules by material format
For books, pamphlets, broadsheets:
aa00001_c01, c02, c03 Cover -- applies to hardcover books and journals only
aa00001_f01 Front Matter – the front pages including title pages, blank pages, table of contents, etc
aa00001_b01 Back Matter – the back pages including any indices, appendixes, etc.)
aa00001_0001a, 0001b Image pages within text - used in books to denote pages consisting only of pictures where “a” is front, “b” is back. (This is an extra notation to help visually locate images within large textual documents and when there is no native pagination)
aa00001_0001 Corresponds directly the actual page number of original object. Match number as printed on page,
EXCEPTIONS or Special Cases:
government reports or imprints
1) Exception for government reports where two reports are physically bound and each report has its own series of page numbers AND elected to treat as ONE digital object
aa00001_a001 (first set of sequential pages)
aa00001_b001 (second set)
example: aa00304 - Used for Box 3 folder 21 Item 52.29 – title: 1845 28th Cong., 2d Sess. SD30, SD31-44
2) Exception for government reports where two reports are physically bound together and each report has its own series of page numbers AND elected to treat as SEPARATE digital objects
aa00001a_0001 (first set of sequential pages)
aa00001b_0001 (second set)
example: aa00008a | b - Used for Box 3 folder 15: Item 52.03: 1837 Martin Van Buren document – 18pp first set; 94pp second set]
For Manuscripts, Journals or any handwritten document:
aa00002_0001 corresponds directly the actual order of pages of original document
For two sided, stand-alone images:
aa00003_0001r (front image)
aa00003_0001v (back image)
Example: Panama Canal prints (aa00004); Map of the American Hemisphere (aa00033)
aa00035.xml XML/TEI file of original language document
aa00035tr.xml XML/TEI file of translation
Translations (born digital items)
Same identifier notation plus letter “tr” Thereby mirroring the original. Suffix numbering remains the same.
aa00035_#### original digitized version
aa00035tr_#### translation version