Table of Contents:



Remote access electronic resources that are no longer available ( FN 1):

LC practice:

Original URI no longer active:  When it is determined that a remote access electronic resource is no longer available ( FN 2) at the Uniform Resource Identifier (URI) recorded in field 856 $u, do the following:

1)   Use Internet search engine(s) to determine if the resource described in the record is now available at a different URI.  If found, update the record to reflect the new URI.

2)   If searching indicates that the resource is no longer available, create a note to reflect this fact by changing subfield $u in field 856 to subfield $z and modifying the subfield to show that the resource is no longer available, indicating the last date that the resource was searched.  If explicit information is received regarding the disappearance of the resource (e.g., a communication with the publisher), record this information in $z as well as the date the resource ceased, and optionally reflect this date elsewhere in the record (e.g., 260$c, 008). ( FN 3)

original record:

856 41 $u

revised record:

856 41 $z Electronic address ( not available when searched on [date]

Original URI still active, but original resource no longer available:  If the resource located at that URI represents a completely different resource from that described in the record (i.e., not just a new iteration of the resource), treat the existing bibliographic record as above and create a record for the new resource now at the original URI (if appropriate for adding to the catalog).


Option Decision:

LC practice:  Do not apply the first option.  Apply the second option on a case-by-case basis.

See also:

9.7.  Note Area