Special Cataloging Scenarios
NOTE: For information on the proper use of MARC tags, consult OCLC Bibliographic Formats and Standards.
Local Author
590 (Local Note): Local author.
610 10 (Personal Subject): Lastname, FirstName

Special Library Location Information / Instructions
Example:
590 (Local Note): Scranton Public Library Photograph Index: WCK

One ISBN / Two Publishers
There should be one title record, but two 260 tags that describe both publishers as in this example:

1.