EAD (Encoded Archival Description ; Version 2002 Official Site)

Encoded Archival Description Tag Library, Version 2002

EAD Elements

<unitid> ID of the Unit

Description:

Any alpha-numeric text string that serves as a unique reference point or control number for the described material, such as a lot number, an accession number, a classification number, or an entry number in a bibliography or catalog. An important subelement of the Descriptive Identification < did>, the <unitid> is primarily a logical designation, which sometimes secondarily provides location information, as in the case of a classification number. Use other <did> subelements, such as <physloc> and <container>, to designate specifically the physical location of the described materials.

Do not confuse <unitid>, which relates to the archival materials, with <eadid>, which is used to designate a unique identification string for the finding aid.

Although not required, the COUNTRYCODE and REPOSITORYCODE attributes should be used in < unitid> at the <archdesc><did> level to comply with ISAD(G) element 3.1.1. REPOSITORYCODE specifies the ISO 15511 code for the institution that has custody of the materials described, while COUNTRYCODE provides the ISO 3166-1 code for the country in which that institution is located. IDENTIFIER should contain a machine-readable unique identifier, containing a value similar to the text in the <unitid> element. The TYPE attribute may be used to indicate the system from which the <unitid> was derived, e.g., accessioning system, record group classification scheme, records retention scheduling system, etc.

May contain:

#PCDATA, abbr, archref, bibref, emph, expan, extptr, extref, lb, linkgrp, ptr, ref, title

May occur within:

archref, did

Attributes:

ALTRENDER #IMPLIED, CDATA
AUDIENCE #IMPLIED, external, internal
COUNTRYCODE #IMPLIED, NMTOKEN
ENCODINGANALOG #IMPLIED, CDATA
ID #IMPLIED, ID
IDENTIFIER #IMPLIED, CDATA
LABEL #IMPLIED, CDATA
REPOSITORYCODE #IMPLIED, NMTOKEN
TYPE #IMPLIED, CDATA

Example:

    <archdesc level="collection">
        <did>
            <head>Descriptive Summary</head>
            <unittitle label="Title">Donald C. Stone, Jr. Papers, </unittitle>
            <unitdate type="inclusive">1971-1983</unitdate>
            <unitid countrycode="us" repositorycode="cbgtu" label="Accession number">
            GTU 2001-8-03</unitid>
            <origination label="Creator">
                <persname source="lcnaf">
                    Stone, Donald C., Jr.
                </persname>
            </origination>
            <physdesc label="Extent"><extent>4 boxes, </extent><extent>4
            linear ft.</extent> </physdesc>
            <repository label="Repository">
                The <corpname>Graduate Theological Union</corpname>
                <address><addressline>Berkeley, California</addressline></address>
            </repository>
            <abstract label="Abstract">The papers document Donald C. Stone's work with
            Ornstein and Swencionis on the <emph render="italic">est</emph> Outcome
            Project, and the development of his doctoral research, including his various
            publications on the human potential movement, up to the completion of his doctoral
            dissertation.</abstract>
            <physloc label="Shelf location">5/D/4-5</physloc>
        </did> . . .
    </archdesc>