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This appears to not actually be available for use beyond UBC Xwi7xwa library currently. You may see these headings on bibs in Connexion, but for now won't be able to add them to records yourself. See https://www.researchgate.net/publication/277022370_Indigenization_of_Knowledge_Organization_at_the_Xwi7xwa_Library for more details on this vocabulary.
--- Discuss SACO Funnel/Local Harvard SACO efforts here ---
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Info on the history of the funnel: https://drive.google.com/file/d/179ZDjC-E7Bey5W282HaGKDHMkttfLFQC/view
--- Discuss "Illegal aliens" example of Harvard using term overlay in Primo ---
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Possible actions Harvard Library has utilitized for local changes
To deal with LC's reluctance to change subject headings related to undocumented immigrants, the Harvard Library "Change the Subject" Task Group implemented a local solution in January 2021 to remap any headings with "aliens" to display as "noncitizens" and the heading "illegal aliens" to "undocumented immigrants." This solution was reversed in 2022 after LC changed the heading involved. This could be a potential temporary solution to future problematic headings. Information on the project and its implementation can be found here:
Best practice for LCSH headings that use "illegal" or "alien" to refer to people
Relevant articles
The Language of Cataloguing: Deconstructing and Decolonizing Systems of Organization in Libraries: https://ojs.library.dal.ca/djim/article/view/7853
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