The Source attribute in <subject> allows you to specify the source (LCSH, AAT, MeSH, etc.) of the content of the element. Michael Fox -----Original Message----- From: Encoded Archival Description List [mailto:[log in to unmask]]On Behalf Of Reilly, Felicia Sent: Monday, July 09, 2007 11:23 AM To: [log in to unmask] Subject: Medical Subject Headings with EAD Hi everyone, When indicating subject headings for EAD, should they conform to LCSH (Anesthesiology-History) or can they be in the MeSH format (Anesthesiology/history). Thanks in advance for your help. Felicia Felicia A. Reilly, MALS Archivist The Wood Library-Museum of Anesthesiology American Society of Anesthesiologists 520 N. Northwest Highway Park Ridge, IL 60068 847-825-5586, Ext. 121 Fax: 847-825-1692 [log in to unmask] http://www.woodlibrarymuseum.org/