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<container> Container

<container> is a subelement found within <archref>, or <did> which encodes information about the container used to hold the materials. It may identify type and number. It’s generally used to specify a number or other designation associated with a box at the folder level, or possibly a folder number at the item-level. This should not be confused with the <physloc> element, which designates the location of the containers. It is also not the same as <unitid>, which generally designates control numbers not associated with physical containers. However, both may be used to specify the call number…see the LABEL attribute below.


  • ALTRENDER – not required. Use if the content of the element should be displayed or printed differently than the rendering established in a style sheet for other occurrences of the element.
  • AUDIENCE – not required. Use to set whether the element’s contents will be visible to external users or to internal ones. Possible values are: “internal” and “external.”
  • ID – not required. Creates an ID for element. Can be used for linking.
  • ENCODINGANALOG – not required. May contain information to map this tag to a particular element in another schema.
  • LABEL – not required. May be used to specify whether this is part of the call number or any other useful display data.
  • PARENT – not required. May be used to reference the ID of a box in which a folder is housed.
  • TYPE – not required. Clarifies the nature of storage device. Strongly recommended.


<container> probably will contain PCDATA and may contain <abbr>, <archref>, <bibref>, <emph>, <expan>, <extptr>, <extref>, <lb />, <linkgrp>, <ptr>, <ref>, and <title>.


The following example comes from the Library of Congress website.

<c01 level="series">
	<c02 level="file">
			<container type="box">3</container>
			<container type="folder">18</container>
			<unittitle>Parent-Teacher Association of Fondsville
			<unitdate type="inclusive" normal="1959/1972">1959-1972</unitdate>
	<c02 level="file">
			<container type="box">3</container>
			<container type="folder">19</container>
			<unittitle>Pasta and Politics Club</unittitle>
			<unitdate type="inclusive" normal="1967/1975">1967-1975</unitdate>
	</c02> . . .

EAD tag library entry for <container>.