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Guidelines on Subject Thesauri
General Guidelines
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The subject vocabularies indicated here are intended for use as a supplement to, not in lieu of, the Library of Congress Subject headings. The vocabularies are designed to provide additional access points relevant to specific communities, cultural identities, and areas of practice.
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The Homosaurus is a specialized vocabulary for describing LGBTQIA+ materials in libraries, archives, museums, and other cultural institutions. The Homosaurus vocabulary uses the current language of the LGBTQIA+ community, and is congruent with best practices for its description. It also includes a number of historical LGBTQIA+ terms with instructions on the subjects and periods to which these terms can be applied. It includes both narrower terms and more culturally-appropriate terms than are available in the Library of Congress Subject Headings.
Example: Supplementing an LCSH term with a more culturally-appropriate term from the Homosaurus
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Guidelines on Form and Genre Thesauri
General Guidelines for Form/Genre Terms
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Assign Form/Genre terms according to cataloger judgment and/or project guidelines. The policy attempts to establish uniformity in the description of similar materials, while also accommodating description of the broad range of rare materials held in PUL’s collection. Catalogers’ application of form/genre terms should take into consideration the research needs/interests of PUL Special Collections users: curatorial and public services staff, faculty, students and other researchers.
CaMS professional catalogers should apply MARC 655 form/genre terms from the thesauri indicated, in order of preference, in the table below. RBMS Controlled Vocabularies (comprising six distinct thesauri) are treated as the most-preferred source of terminology.
Table of Form/Genre Thesauri, Listed in order of Preference
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Organization | Name of Thesaurus | Source Code | Parenthetical Qualifier | Chronological Subdivision | Geographic Subdivision | Website | |
RBMS | Genre Terms | rbgenr | [none] | Do not subdivide | Do not subdivide | ||
RBMS | Binding Terms | rbbin | (Binding) | Subdivide item-specific terms by century, if known | Subdivide item-specific terms by country, if known | ||
RBMS | Paper Terms | rbpap | (Paper) | Subdivide Item-specific terms by century, if known | Subdivide item-specific terms by country, if known | ||
RBMS | Printing & Publishing Evidence | rbpri | (Printing) | Subdivide item-specific terms by century, if known | Subdivide item-specific terms by country, if known | ||
RBMS | Provenance Evidence | rbprov | (Provenance) | Subdivide item-specific terms by century, if known | Subdivide item-specific terms by country, if known | ||
RBMS | Type Evidence | rbtyp | (Type evidence) | Subdivide item-specific terms by century, if known | Subdivide item-specific terms by country, if known | ||
LC | LC Genre/Form Terms | lcgft | [none] | Do not subdivide, as per LC policy | Do not subdivide, as per LC policy | ||
Getty AAT | Art & Architecture Thesaurus | aat | [none] | Subdivide item-specific terms by century, if known | Subdivide item-specific terms by country, if known | ||
LC | Thesaurus for Graphic Materials II: Genre and Physical Characteristic Terms (TGM II) | gmgpc | [none] | Subdivide item-specific terms by century, if known | Subdivide item-specific terms by country, if known | ||
PUL | Local terms | Do not use; update legacy terms if possible | Do not use | Do not use | Do not use | ||
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Indicators, Subfields, and Parenthetical Qualifiers for Form/Genre Terms
Indicators and subfields:
When using thesauri terms from any public (non-local) thesaurus on the list above, catalogers should add the source code for the thesaurus from which the term comes after the terms themselves, using MARC format ‡2: ‡2 rbgenr, ‡2 rbprov, ‡2 aat, for instance.
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- 655_7 ‡a Fairy tales. ‡2 rbgenr
- 655_7 ‡a Inscriptions (Provenance) ‡2 rbprov
Parenthetical Qualifiers:
Terms from the RBMS Binding Evidence (rbbin), Printing and Publishing Terms (rbpri, rbpub), and Provenance Evidence (rbprov) thesauri should also include the relevant qualifier after the thesauri source code (in parenthesis), immediately after the thesauri term itself. For instance:
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