The custodial history of an object:

The volume was presented to John Smith by Jones and Company on the occasion of his retirement from the company in 1888, and was located in Smith's private library until 1895, when it was sold to Wilson Booksellers of Liverpool. It was purchased for the National Library at auction in Manchester in June 1899.

The custodial history of a collection:

Letters written by John Smith and sent to Tom Jones remained in the custody of Jones until his death in 1966 when they were returned to Smith. The Smith collection was presented to the library as a gift by James Smith on 5 May 1973.

Information about changes in the ownership or custody of a collection may be important in helping a user to select a resource and/or, having selected a resource, to interpret the resource.

The International Standard for Archival Description (ISAD(G)), Second Edition (2000) is a descriptive standard for archival records. It can be applied to units of description at any level from the collection (or fonds) to the individual item, and includes two related elements:

• 3.2.3 Archival history

  Purpose: To provide information on the history of the unit of description that is significant for its authenticity, integrity and interpretation.

  Rules: Record the successive transfers of ownership, responsibility and/or custody of the unit of description and indicate those actions, such as history of the arrangement, production of contemporary finding aids, re-use of the records for other purposes or software migrations, that have contributed to its present structure and arrangement.

• 3.2.4 Immediate source of acquisition

  Purpose: To identify the immediate source of acquisition or transfer.

  Rules: Record the source from which the unit of description was acquired and the date and/or method of acquisition if any or all of this information is not confidential.

ISAD(G) does not itself provide a machine-readable binding. The proposed term would be used to capture information recorded in both of these ISAD(G) elements.

The Encoded Archival Description (EAD) DTD is a standard for encoding archival finding aids using SGML or XML. It includes two XML elements:

• <custodhist> Custodial History

  Information about the chain of ownership of the materials being described, before they reached the immediate source of acquisition. Both physical possession and intellectual ownership can be described, providing details of changes of ownership and/or custody that may be significant in terms of authority, integrity, and interpretation.

• <acqinfo> Acquisition Information

  The immediate source of the materials being described and the circumstances under which they were received. Includes donations, transfers, purchases, and deposits.

These are XML elements, not RDF properties. The proposed term would be used to capture information recorded in both of these EAD elements.

The term is proposed by the Dublin Core Collection Description Working Group. One of the primary aims of the WG is the development of a Dublin Core Application Profile (DCAP) for collection-level description, i.e. for the description of a collection as a resource, rather than the description of the individual items that make up that collection.

Records of the activity of the WG are available in the mailing list archives.

The current draft of the Collection Description Application Profile is available at http://www.ukoln.ac.uk/metadata/dcmi/collection-application-profile/