Table of Contents
1. Canadian Subject Headings: History and Background
Canadian Subject Headings (CSH) is a list of access points in the English language, using controlled vocabulary, to express the subject content of documents on Canada. The scope of CSH is mostly limited to the Canadian cultural, economic, historical, literary, political and social experience, with few subject headings in other fields of study. While the headings in CSH are only in the English language, they have French language equivalents in Répertoire de vedettes-matière (RVM), published by the Bibliothèque de l'Université Laval. Refer to the section of this document French language equivalents for more information on links to that list of subject headings.
Inaugural efforts at a separate list of subject headings for Canadian topics not adequately covered in the Library of Congress Subject Headings (LCSH) began in 1968. The first edition produced by the National Library of Canada came out in 1978 followed by further print editions in 1985 and 1992 and regular supplements. CSH on the Web was launched in October 2000 using authority records for CSH from AMICUS, the National Library of Canada's database of bibliographic and authority records.
2. Relationship to Library of Congress Subject Headings (LCSH)
CSH is designed to be used in tandem with LCSH. CSH follows the same principles for the structuring of the headings and most of the same policies as LCSH. Headings that are divergent from what would be permitted in LCSH are often based on some policy in LCSH adapted for CSH. For example, Italian Canadians is based on LCSH's Italian Americans and the term "Provincial" substituted where the user may find "State" in LCSH. Differences in headings or policy in CSH are sometimes necessary to provide appropriate subject access to materials on Canada. However, it is the aim of the National Library of Canada to minimize those instances. Decisions to diverge intentionally from the LCSH pattern have been taken only after a thorough investigation and weighing of the available options.
3. Types of headings included in CSH
CSH includes three main types of headings: topical headings, shown when appropriate in the format [topic]--Canada, Canadian [topic] or [topic], Canadian; geographic headings of the format [place]--[topical, form or chronological subdivision] where it is the practice of LCSH to express topics in that way; and non-jurisdictional geographic headings related to Canada, that is regions, rivers, parks, lakes, etc. There are a small number of name, name-title and uniform title headings, where it is helpful to show the relationship between these headings and topical headings in the same field.
Some categories of headings justify special mention here:
4. Types of headings with differences between CSH and LCSH
This section discusses key areas where there are differences between CSH and LCSH. Some of the headings in CSH are found only in this list of subject headings and have no matching heading in LCSH or are in some way different from the equivalent heading in that list.
5. Structure of the headings
The Thesaurus Record is the default record display. The record can also be displayed in MARC format by clicking on the MARC Record button. Further information on these displays is found by clicking on "Help" on the Search screen, or any Search Results or Record screen.
Subject headings in CSH are shown in the form [topic]--Canada when appropriate. The headings can also be subdivided by provinces and territories and further subdivided by local place names, or subdivided by other geographic regions, e.g. Decorative arts--Quebec (Province); Festivals--Ontario--Toronto; Geology--Rocky Mountains, Canadian (B.C. and Alta.). If the heading is not structured as [topic]--Canada, instructions about geographic subdivision are given in a note such as "May be subdivided geographically for collections by authors from one particular area", which is routinely provided under headings for literary topics, or "May be subdivided geographically by foreign region or country only" under headings such as Economic assistance, Canadian.
When there are topical subdivisions shown, for some subdivisions, the subdivision --Canada or other geographic subdivision immediately follows the first or main element or part of the heading and is then followed by the topical subdivision. With other subdivisions the order is reversed, the topical subdivision precedes the geographic subdivision. The order of the subdivisions is based on policies in LCSH. Thus, Actors--Canada--Biography and Actors--Employment--Canada are both correct. In the second example where the geographic subdivision does not immediately follow the main part of the heading, a USE reference leads from Actors--Canada--Employment to the valid heading Actors--Employment--Canada. This means that the user more easily sees at a glance every subdivision potentially applicable to the main heading Actors--Canada.
Some headings are not appropriate in the form [topic]--Canada, since the topic already implies something innately Canadian or is a named event or lacks specific geographic significance or the heading is properly expressed in the form Canadian [topic] or [topic], Canadian, e.g. Black Canadians; Métis; CEGEPs (Educational institutions); Ipperwash Incident, Ont., 1993- ; Shaking tent ceremony (Algonquian rite); Short stories, Canadian.
6. Identifying headings that are authorized in CSH, but not in LCSH
In the Thesaurus display: For headings authorized in CSH, but not in LCSH, the symbol [CSH] follows the valid CSH heading, e.g. Aboriginal tourism--Canada [CSH]; Cabinet ministers--Canada [CSH]. If there is an equivalent LCSH heading not used in CSH, this follows, beginning with the symbol EQ, then the heading followed by the symbol [LCSH], e.g.
The LCSH headings appear as a search term in the Search Results screen, to enable the user to search on that term, and be led to the record for the equivalent heading in CSH.
In the MARC display: For headings authorized in CSH, but not in LCSH, 008 field, character position 11 (Subject heading system/thesaurus) contains value "k" (Canadian Subject Headings). This means the heading is found in CSH but is not a valid LCSH. For example, using the above examples, the 008 field for Aboriginal tourism--Canada contains "000913 neanknnbabn a ana" and the 008 field for Cabinet ministers--Canada contains "860430 neanknnbabn a ana". Headings that are valid in LCSH contain value "a" (Library of Congress Subject Headings) in 008 field, character position 11. This means the heading is a valid LCSH carried over into CSH. For example, in the record for Actors--Canada, the 008 field contains "850812 neanannbabn a ana".
If there is an equivalent LCSH heading not used in CSH, this is contained in a 7XX field with 2nd indicator "0". For example, the record for Cabinet ministers--Canada contains the valid CSH heading in field 150 and the equivalent LCSH heading in field 750:
Note: A heading is considered authorized in CSH, but not LCSH, if the main part of the heading such as Canada--History--War of 1812, is in CSH, but not LCSH, but the subdivision that follows is valid in LCSH, e.g. --Monuments. Thus Canada--History--War of 1812--Monuments is identified as "[CSH]". Conversely, a heading is also considered authorized in CSH, but not LCSH, if the main part of the heading such as Indians of North America--Canada, is an LCSH, but the subdivision that follows, e.g. --Band membership, is not valid in LCSH. Thus Indians of North America--Canada--Band membership is identified as "[CSH]". This same practice extends to chronological subdivisions.
Like LCSH, CSH makes use of what are called pattern headings. The subdivisions shown under these headings can be used with other appropriate headings in the category noted below inside the parentheses. A note in the authority record signals this for the user. The list of subdivisions in CSH is not intended to be comprehensive. Users should refer to LCSH or the Library of Congress' Subject Cataloging Manual for other applicable subdivisions. The pattern headings are:
A small number of subdivisions are unique to, or have been modified for CSH:
8. Scope notes and instructions
Scope notes follow the same principles as those in LCSH. A large number of scope notes and instructions have been provided in CSH, with these goals:
Generally the scope note is provided at the most general heading in a specific subject area. Notes of the type "Note under …" or "Example under …" (681 field in MARC display) in records direct the user to the information they need. For example, the record for Canadian literature provides a comprehensive scope note for all literary topics. Records for other headings for literary topics such as Canadian fiction; Canadian literature (Hungarian); and Hockey stories, Canadian have notes such as "Note under Canadian literature", or "May be qualified by language; cf. instructions under Canadian literature", that lead the user back to the information under Canadian literature. It is important to follow such instructions for the proper interpretation and usage of CSH.
9. References: the relationship between headings
References follow the same format as in LCSH, aside from the addition of EQ = Equivalent. In the Thesaurus Record, the display of the records uses several symbols: NT = Narrower term; BT = Broader term; RT = Related term; UF = Used for; USE; SA = See also. In the MARC Record display the various references are contained in MARC fields 4XX, 5XX, 7XX, 260 and 360.
The following are some details of interest in CSH:
In general, NT and BT set the heading into a hierarchical structure, although in CSH, the hierarchy may be different than in LCSH, CSH being a shorter list of headings. For example, LCSH has:
whereas CSH has
In this example, the LCSH heading Art festivals--Canada, while valid in catalogues using both CSH and LCSH as subject heading systems, is not included in CSH because it does not have any special Canadian significance and is unnecessary for the reference structure there.
CSH follows a different practice than LCSH for BTs for headings for geographic entities, because of the practice of showing headings in the form [topic] --Canada. Other libraries adding CSH records to their catalogues can insert whichever BT is most appropriate for their catalogue. Thus CSH displays:
CSH avoids orphan headings (headings without a reference from an appropriate broader term or related term), by always adding a BT or RT reference, unless the heading is a subdivision or extension of another heading. Examples of potential orphan headings where a reference was added are:
CSH tends to have a greater number of related term references than the usual practice in LCSH since many of the relationships in LCSH may not be present, and the editors have tried to provide all possible links that may occur to the user interested in Canadian topics.
CSH has a plentiful number of USE references. They are preceded by an asterisk (*) in the Search Results screen, e.g. *Academy awards, Canadian (Motion pictures) which leads to Genie Awards. The user may be directed:
Sometimes the reference leads to a complex "see" note, e.g.:
Other times the reference leads to a general note, e.g.:
Other terms with this type of general note are: Catalogs (Lists); Correspondence; Dictionaries; Expeditions; Guides; Handbooks; Illustrative materials; Indexes (Lists) and Pictorial materials.
The references leading to these more complex notes are not preceded by an asterisk (*) in the Search Results screens.
Some headings also include SA (general see also) references (field 360 in MARC display). These are usually in the format "SA names of particular…" or "SA subdivision … under …", followed by specific examples that show how to construct similar headings, e.g.:
In those instances where a heading unique to CSH has an equivalent heading in LCSH, the practice in the record is to show the LCSH heading as an equivalent from another subject headings list, rather than a reference. However, the LCSH heading is marked as a reference in the Search Results screen for English language terms, since these are unused English language headings functioning in a sense as references to the CSH heading. Refer to the section of this document Identifying headings that are authorized in CSH, but not in LCSH for more information. Equivalent French language headings from Répertoire de vedettes-matière (RVM) are shown in the same way. They are indexed through a separate Search Results screen for French language terms. Refer to the section of this document French language equivalents for more information.
10. Geographic headings: Details
CSH includes name headings for the provinces and territories to show applicable subdivisions and to provide instructions to set the context for the use of these names as subject access points. Headings for regions of Canada and some historical entities are also included, for example, Red River Settlement; New France; Acadia; Atlantic Provinces; Saguenay Region (Quebec); Eastern Townships (Quebec); Ontario, Southwestern; Alberta, Northern; Lower Mainland (B.C.); Kitikmeot Region (Nunavut). Scope notes aid the user where there may be some question as to the definition of these headings. CSH also includes headings for non-jurisdictional geographic entities and physical features such as rivers, lakes, parks and historic sites.
Most geographic headings in CSH can be used as subdivisions unless otherwise noted. Geographic subdivision is by current jurisdiction. What are called first order jurisdictions (one of the provinces or territories) are interposed between the main part of the heading and the name of the local place or entity to which the topic is limited, unless that place is located in two or more jurisdictions, in which case the local subdivision is assigned directly. The headings Atlantic Provinces; Maritimes Provinces; Prairie Provinces; Canada, Eastern; Canada, Western; Canada, Northern; and Canada, Central may be used as subdivisions directly under topical headings without interposing --Canada.
In general, CSH follows practices outlined in the Library of Congress' Subject Cataloging Manual when constructing headings for non-jurisdictional geographic names, for geographic qualifiers and geographic subdivision; and concerning the use of earlier names vs. current names. Decisions on spelling and the choice among variant forms of name are based on forms of names approved by the Geographical Names Board of Canada on its Web site Canadian Geographical Names Data Base and the Commission de toponymie du Québec on its Web site TOPOS sur le Web. Information from other authoritative reference sources may also be considered if the name is not found in those databases. This occasionally may result in a heading different from LC's for a feature that crosses the Canada-U.S. border, e.g. Pend-d'Oreille River; Red River (Minn. and N.D.-Man.).
The heading Canada serves as a pattern heading for headings for geographic names, so subdivisions there can be used under provinces, territories, names of regions, physical features, counties, rural municipalities, cities, towns, city sections, etc., unless noted otherwise or inappropriate.
11. French language equivalents
CSH is a list of subject access points in the English language; however, the authority records contain links to French language equivalents which allow the user to search on equivalent French language headings, from Répertoire de vedettes-matière (RVM), and be led to the record for the equivalent heading in CSH.
In the Thesaurus display: French language equivalent headings begin with the symbol EQ, followed by the equivalent heading and the symbol [RVM]. For example, the display for the CSH heading Cabinet ministers--Canada:
In the MARC display: The RVM equivalent is contained in a 7XX field with 2nd indicator "6". For example, the display for the CSH heading Cabinet ministers--Canada:
CSH includes two lists of subdivisions, one linking the user from English language subdivisions used in CSH to their French equivalents and the other from the French language equivalents to the English language subdivisions. The subdivisions in these lists are limited to topical and form subdivisions, and only listed there if used in more than one heading in CSH. Otherwise, refer to individual authority records for equivalents for subdivisions. The lists themselves and more information about them are accessed at: www.collectionscanada.gc.ca/csh/s23-200-e.html.
12. Spelling; capitalization; punctuation; abbreviations
All topical headings included in CSH conform to LCSH spelling conventions if the heading is borrowed from LCSH or based on an LCSH heading or policy. In scope notes and instructions, however, spelling conventions in Canadian English have been followed. This may result in variant forms of the same word; e.g. "Catalogs" and "Catalogues"; "Theaters" and "Theatres". References are made from terms using Canadian spelling. Bibliographic works and reference sources are consulted to aid in spelling decisions for other headings found only in CSH.
Refer to the section of this document Geographic headings: Details for information on the spelling of geographic names.
Capitalization, punctuation and abbreviations follow policies outlined in LC's Subject Cataloging Manual.
13. New headings and changes to headings
New headings are added to CSH or revisions made, as required, for new bibliographic works, or to reflect policy changes in LCSH or at the National Library of Canada that affect CSH. While new headings are primarily based on cataloguing done at the National Library, suggestions from outside users are also welcomed. Please send suggestions to: firstname.lastname@example.org
In researching new headings, appropriate reference sources are consulted, both in print and on the Web. If justified, experts in specific fields are consulted. The National Library adds source information for new headings, contained in field 670 notes of the MARC record display.
Authority records for CSH are created and maintained in the AMICUS database of bibliographic and authority records. At the start of each month, CSH on the Web is generated from those authority records. This means that AMICUS can be consulted if a user should need to see if a heading has been established since the last update of CSH on the Web.
Each month a list is provided of new records and revised records in CSH on the Web during the past month to aid the user in identifying changes to the database. The list of revised records is further subdivided according to whether the change is in the heading itself, its tagging or only in the references or notes. Lists from previous months are archived. The lists are accessed at: www.collectionscanada.gc.ca/csh/s23-300-e.html
14. Downloading from AMICUS
Registered AMICUS users can download CSH authority records in the MARC 21 format from the AMICUS database. For more information on becoming a registered user and/or downloading from AMICUS, contact the AMICUS Support Service