I am cataloging a French language liber amicorum for a Swiss legal scholar who specializes in environmental law. The authority record for this person, created in 1996, is entirely correct, except that the work cited in the 670 is absolutely unrelated to the Swiss scholar, and there is no second person with the same name related to that work. The work cited is a handbook on real estate appraisal published by the Nevada Real Estate Division. I have gotten the work cited on interlibrary loan and have verified that the name does not appear in that book, nor is it used in LC's bibliographic record for that title. The information in the 670 subfield b makes sense for the Swiss author, but the source of it is unknown.
What is the best course of action in an instance such as this? Is there guidance for how to handle such situations anywhere? Should I create a new record and request cancellation of the old one, or edit the existing one by deleting the original 670 and adding new ones? My inclination is for the former. Should I retain the original heading, or make a new one using the birth date, which is found in the liber amicorum?
The University of Michigan