Do you mean MARC-XML? http://www.loc.gov/standards/marcxml/ But I'm not sure schemas exist that will actually validate the semantic content you want validated. Jonathan Houghton,Andrew wrote: > Does anybody know whether the MARC formats at: > > <http://www.loc.gov/marc/authority/> > <http://www.loc.gov/marc/bibliographic/> > <http://www.loc.gov/marc/classification/> > <http://www.loc.gov/marc/community/> > <http://www.loc.gov/marc/holdings/> > > are encoded in an XML format that one might use for processing/validation of the leader, field tags, indicator codes, subfield codes, field and subfield repeatability, and field and subfield requiredness. Something akin to the codepoint table in XML at: > > <http://www.loc.gov/marc/specifications/codetables.xml> > > > Thanks, Andy. > >