FYI: Cross-posted with apologies
The following is a statement of LC policy prepared by CPSO with
the approval of the Director for Cataloging on the use of field
856 in authority records:
"LC has decided that it will not use the 856 (Electronic Location
and Access) field in name/series or subject authority records,
nor will NACO/SACO participants be permitted to add the field in records
they contribute. Instead, LC will seek the addition of
a newly defined subfield $u (Uniform Resource Identifier) in the
670 (Source Data Found) field.
Use of the 670 $u rather than the 856 will provide the opportunity
for enabling links to Web resources while clarifying the relationship of
that resource to the entity described in the authority record.
It will also reduce the redundancy of data in the authority record,
since it would be necessary to add information in a subfield $b of
a 670 field even if the 856 field were used. The 670 subfield $b
will, as is now the practice, contain a summary of the data found
in the source for immediate use when consulting the authority
record for normal cataloging purposes. The new subfield $u would provide
a link to the URL for those needing additional information.
A paper on the addition of $u to the 670 field is planned for discussion
at the MARC Advisory Committee meeting during ALA
Please direct any questions to [log in to unmask]
Posted by Ana Cristán for CPSO