incarnation of EAD, was finalized in December 2002 and made available as an XML DTD. The latest version of EAD, EAD3, is available as both an XML schema and a DTD. Parts of an EAD finding aid Note: Examples in this section are EAD2, and may not be valid against the EAD3 schema. eadheader Note: In the current release of EAD3 1.0, the eadheader element has been replaced with the control element. The first section of an EAD-encoded finding aid is the eadheader. This section contains the title and optional subtitle of the collection and detailed information about the finding aid itself: who created it, when it was created, its revision history, the language the finding aid is written in, and so on. The eadheader itself has a number of required attributes that map to various ISO standards such as ISO 3166-1 for country codes and ISO 8601 for date formats. The eadheader and its child elements can be mapped to other standards for easy interchange of information. They are often mapped to Dublin Core elements such as Creator, Author, Language. For example, in the excerpt below the relatedencoding="DC" attribute of the eadheader element specifies that child elements will be mapped to Dublin Core; the child element <author encodinganalog="Creator"> indicates that the EAD element <author> maps to the Dublin Core element <creator>. Example of an eadheader: <eadheader audience="internal" countryencoding="iso3166-1" dateencoding="iso8601" langencoding="iso639-2b" relatedencoding="DC" repositoryencoding="iso15511" scriptencoding="iso15924"> <eadid countrycode="us" identifier="bachrach_lf" mainagencycode="NSyU">bachrach_lf</eadid> <filedesc> <titlestmt> <titleproper encodinganalog="Title">Louis Fabian Bachrach Papers</titleproper> <subtitle>An inventory of his papers at Blank University</subtitle> <author encodinganalog="Creator">Mary Smith</author> </titlestmt> <publicationstmt> <publisher encodinganalog="Publisher">Blank University</publisher> <date encodinganalog="Date" normal="1981">1981</date> </publicationstmt> </filedesc> <profiledesc> <creation>John Jones <date normal="2006-09-13">13 Sep 2006</date> </creation> <langusage> <language encodinganalog="Language" langcode="eng">English</language> </langusage> </profiledesc> </eadheader> archdesc The archdesc section contains the description of the collection material itself. First, the Descriptive Identification or did element contains a description of the collection as a whole, including the creator (which may be an individual or an organization), size (usually given in linear feet), inclusive dates, language(s), and an abstract or brief description. As with the eadheader above, elements may be mapped to corresponding standards; elements in this section are usually mapped to MARC elements. For example, in the excerpt below the relatedencoding="MARC21" attribute of the archdesc element specifies that child elements will be mapped to MARC21; the child element <unittitle encodinganalog="245$a" label="Title: "> indicates that the unittitle element maps to MARC field 245, subfield a. Example: <archdesc