This document discusses crosswalking between Dublin Core and MARC metadata standards. It outlines key principles for crosswalking like embracing standards and exposing as much information content as practical. It then provides an illustrative mapping between Dublin Core elements and MARC 21 fields, showing how elements like Contributor map to 700 and 710 fields. The document also introduces CORC, a system that incorporates Dublin Core and MARC standards to automatically generate resource records and authority records and provide metadata in multiple formats.