NACO: Errors and Omissions
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Princeton University Cataloging Documentation

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Errors and omissions

If you wish to change an established AACR2 heading (other than provisional or preliminary) because of evidence that it has been established incorrectly, please consult the NACO Coordinator.

    Note that omission of birth and/or death dates or fuller names, that the cataloger failed to note in the first item cataloged, is not sufficient reason to change an established AACR2 heading, as long as the heading is usable and does not conflict. If you note such an instance, add the information to the record (usually at the end of the existing 670 field if you have the same item). Do not change the heading.