Cataloger's Reference Shelf LCSH - Principles of Structure and Policies for Application
5.3 Cross references
Cross references are made for the purposes of guiding the catalog users from their entry vocabulary to valid headings and linking related headings.
5.3 Reference
5.31 Linking entry vocabulary to valid headings
5.32 Linking related headings
See also:
5.0 Generation of headings and cross references