I am in the process of upgrading some less-than-full database records for incunabula to PCC level. I am, of course, creating NARs as needed. My question deals with special fields with local information that libraries have included to represent provenance, etc. Does the appearance of a $5 in certain fields obviate the need for creating authority records? I'm reluctant to delete fields that other libraries have added, but I really see no need to try to establish NARs for such headings. I find no information in the BIBCO manual that deals with this question. Any advice?
Indiana University Libraries
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