<odd> Other Descriptive Data

<odd> is used to encode information about described materials that isn’t easily incorporated to other named elements within <archdesc> and <c>. It may be especially useful to handle leftover descriptive data when converting a print finding aid to EAD markup or dealing with stray note fields when a note element is not available. It should only be used after consideration of how its use will affect search and display of the information. Ideally, it should only be used for handling legacy <odd> elements that can’t be mapped to anything else.

<odd> is comparable to ISAD(G) data element 3.6.1 and MARC field 500. It one of the elements which may be used within <archdesc>, <c>, and <c01> … <c12>.


  • @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.”
  • @encodinganalog – not required. May contain information to map this tag to a particular element in another schema.
  • @id – not required. Creates an ID for element. Can be used for linking.
  • @lang – not required. Three-letter code that indicates the language in which the element’s contents were written. It should come from ISO 639-2b.
  • @localtype – not required. This attribute may be used within a number of elements. Its use and values are not defined by the schema and may be defined locally.
  • @script – not required. Four-letter code that indicates the script in which the element’s contents were written. It should come from ISO 15924.

Child Elements

<odd> may contain an optional <head> element. It must contain one or more of the following: <blockquote>, <chronlist>, <list>, <p>, <table>, and further <odd> elements.


See DACS Section 7, Notes. Added value. (DACS 2013, pp.77-81)


  <head>Other Descriptive Data</head>
  <p>There is no recorded notetaker on most minutes. Styles vary from brief bullet points to longform notes.</p>

Changes from EAD 2002

<odd> gained @lang and @script elements. @type changed to @localtype. It lost <address>, <dao>, <daogrp>, and <note>.

EAD3 Tag Library Entry

View the official tag library entry for <odd>