Added Entries and Tracing in AACR-2R: Enhancing Searchability in Catalogues

Every library holds thousands of documents, and each one can be searched for in more than one way. A reader might remember an author’s name, recall only the title, or simply know the subject they want to study. The catalogue has to satisfy all of them. This is exactly the problem that added entries and the tracing section in AACR-2R were designed to solve. They turn a single catalogue record into a resource that can be reached from many directions, making the catalogue genuinely useful instead of merely a list. Let us look at how these two ideas work and why cataloguers depend on them so heavily.

Where added entries fit in AACR-2R 🔗

The Anglo-American Cataloguing Rules, Second Edition, Revised (AACR-2R) is organised into two parts. Part I deals with bibliographic description, while Part II covers the choice and form of access points, uniform titles, and references. The rules for deciding what becomes a main entry and what becomes an added entry sit in Chapter 21, titled Choice of Access Points. The chapters that follow it explain how to actually construct the headings for persons, geographic names, and corporate bodies.

Before added entries make sense, the main entry has to be understood. AACR-2R defines the main entry as the complete catalogue record of an item, presented in the form by which the entry is to be cited, and it notes that the main entry may include the tracings. Only one main entry is prepared for each document, and in a dictionary catalogue it is usually made under the author. An added entry, by contrast, is a secondary entry, additional to the main entry, by which an item is also represented in the catalogue. The standard definition describes it simply as an entry, additional to the main entry, by which an item is represented in a catalogue.

Why a single document needs multiple entries 🔗

If a catalogue prepared only one entry per book, readers would be forced to remember the exact element under which that entry was filed. That is unrealistic. A document is connected to several people and several ideas, and any of them could be the starting point of a search.

Consider a book on Indian economic policy written by two authors. The main entry goes under the first author named on the title page. But a reader who knows only the second author’s name, or who only knows the subject, would never reach the record through the main entry alone. Added entries close this gap. They create extra filing points so that the same record can be found whether the reader searches by the co-author, the title, or the subject. In short, added entries exist to capture every reasonable way a reader might look for a document.

The principle behind multiple access points 🔗

An access point is any name, term, or code under which a bibliographic record can be searched and identified. AACR-2R still keeps a clear distinction between the main entry and added entries, even though, in a modern online catalogue, all access points behave almost equally. In a traditional card catalogue this distinction mattered a great deal, because each access point required a physically separate card to be filed in its correct alphabetical place. The cataloguer therefore had to decide consciously how many cards, and which headings, a document deserved.

The tracing section explained 🔗

This is where the tracing section enters. The tracing is the record, written on the main entry itself, of every added entry that has been prepared for that document. Put simply, the tracing is the record of additional entries given within the main entry. It lists each heading under which a separate card has been filed, so the cataloguer always knows how many access points exist for a single document.

The tracing serves two practical purposes. First, it acts as a control device. When a book is withdrawn, lost, or has its details corrected, the cataloguer must locate and remove or amend every card relating to it. The tracing tells the cataloguer exactly how many cards were made and under what headings, so none is missed. Second, it documents the complete set of access points, giving a clear picture of how a resource can be reached from various angles.

How the tracing appears on the card 🔗

In a standard catalogue card, the main entry is built from several sections recorded on the front of the card. If there is no space for the tracing on the front, it can be continued on the back of the main entry card, with a guiding word to indicate the continuation. The tracing usually lists subject headings and added entry headings, often numbered, so they can be read off quickly. This is the cataloguer’s internal map of the record, even though the reader rarely needs to look at it directly.

Common types of added entries 🔗

AACR-2R, especially through the rules in Chapter 21, identifies many situations where an added entry should be made. A few of the most common types appear again and again in everyday cataloguing.

Joint author and collaborator entries 🔗

When a work is produced by two or three joint authors, the main entry goes under the first, and added entries are made for the others. Rule 21.30A1 directs that added entries be prepared for up to two joint authors, and when four or more persons are involved, an added entry is made under the one named first. This older limit, often called the rule of three, was a practical compromise for the card era. In an online environment many cataloguers argue it makes more sense to trace every contributor, and there have been proposals to make the rule-of-three limitation optional so that access can be widened. Added entries are also made for editors, compilers, translators, and illustrators when their role is prominent enough to be worth a separate access point.

Title added entries 🔗

A reader very often remembers a title rather than an author. Because of this, a title added entry is one of the most frequently created access points. As a general rule, an added entry is made under the title proper of a work whenever the main entry is under a personal or corporate heading. This ensures that a reader who recalls only the title can still locate the record. For works of single authorship, where the main entry is under the author, the title added entry quietly doubles the chance that the document will be found.

Subject added entries 🔗

A subject entry answers the reader who does not know any author or title but knows the topic they want to study. In a dictionary catalogue, subject entries are interfiled with author and title entries in one alphabetical sequence. While the descriptive choice of headings comes from AACR-2R, the actual subject terms are drawn from a subject heading list or a thesaurus, and these subject headings are normally listed in the tracing as well. Subject added entries are what make a catalogue a tool for research rather than just a finding list for known items.

Series and corporate body entries 🔗

Two more types deserve mention. A series added entry is made when a document belongs to a named series, so that all titles in that series can be gathered together. A corporate body added entry is made when an organisation, society, or institution is responsible for or associated with the work. The rule interpretations note, for instance, that an added entry is made under a corporate body even when the main entry has been placed under a person or under the title. This widens access for readers who associate a publication with the institution that produced it.

How added entries and tracing improve searchability 🔗

The combined effect of added entries and the tracing section is a catalogue that responds to the reader’s actual behaviour. People do not all approach a document the same way, and a record reachable through only one heading would serve only a fraction of them. By creating multiple access points and recording them carefully, the catalogue becomes flexible.

This thinking continues to shape modern systems. AACR-2R was eventually succeeded by RDA (Resource Description and Access) in 2010, which was designed to handle digital and non-traditional resources more flexibly. Even so, the underlying idea has not changed. The questions that Chapter 21 asks about who or what deserves an access point remain central to cataloguing, and the discipline of the tracing survives in online catalogues as the list of added access fields attached to every record. The principles set out in AACR-2R continue to be studied because they explain, clearly and systematically, why a single document needs many doors leading into it.

Bringing it together 🔗

Added entries and the tracing section work as a pair. Added entries create the extra access points that let readers reach a record by co-author, title, subject, series, or corporate body. The tracing section records all of those access points on the main entry so that the cataloguer keeps full control of every card and every heading made for the document. Together they transform a catalogue from a rigid list into a genuinely searchable system, which is the whole purpose of descriptive cataloguing in the first place.

What do you think? If you were cataloguing a textbook written by four authors and used in three different courses, how many added entries would you create, and which access points would matter most to your readers? In an age of keyword search, does the careful distinction between a main entry and an added entry still serve a purpose?

References

1. https://www.librarianshipstudies.com/2018/12/anglo-american-cataloguing-rules-aacr.html
2. https://www.itsmarc.com/crs/mergedprojects/conser/conser/module_4._introduction,_discussion_points,_references,_and_definitions_of_terms.htm
3. https://www.cambridge.org/core/books/essential-cataloguing/access-points/70DE80D670AABC58A02592FBE0789E30
4. https://coprofessionals.wordpress.com/wp-content/uploads/2016/08/rules-for-cataloguing.pdf
5. https://ebooks.inflibnet.ac.in/lisp3/chapter/types-of-entries-of-dictionary-catalogue-according-to-aacr-2r/
6. https://cataids.wordpress.com/2009/05/06/access-points-for-graphic-novels/
7. http://www2.hawaii.edu/~chopey/ch21LCRI.htm
8. https://www.lisedunetwork.com/anglo-american-cataloguing-rules-aacr-and-aacr2/