The newest version of the Metadata Dictionary and Usage Guide is Version 6, which was published in November 2022. A complete list of the changes from the previous version can be found on the Change Report, starting on page 4 of the Dictionary. The most significant changes are listed below:
Updated Metadata Dictionary, November 2022! This document includes guidelines and examples for all metadata fields, required and not, in New York Heritage. If you follow these directions, your items will be accessible and discoverable!
NYH Metadata Dictionary and Usage Guide Verson 6 (November 2022) (PDF)
CDLC members use several different subject fields, as outlined in this Appendix. They are all mapped to Subject in Dublin Core.
Appendix F for the NYH Metadata Dictionary