670 Fields (Additions and Changes to Authority Records)

Supply 670 citations to an existing authority record in the following two situations:

1. Additions or changes have been made to the record, and changes must be justified (exception: changes made to update punctuation on existing LC NAF records -- such as removing final periods-- do not have to be justified in a 670)

2. Important new information is found about a heading that warrants inclusion

Note: It is important to point out that, just as a NACO library is not obligated to contribute any individual new NAR, so a NACO library need not make a change to any individual NAR, unless the change is required by the rules.

Procedure:

1. Apply the principles in the section New Headings -- 670 Field in formulating additional 670 citations.

2. Generally do not change the order of the existing 670 fields already cited in the record. New 670 fields will simply be listed after those already given.

3. Do not routinely delete 670 fields already cited when the addition of new 670 fields makes the earlier ones irrelevant.

4. For undifferentiated personal name authority records, follow the guidelines in this online help.

See also:

Section II - Additons and Changes to Authority Records