Hello, We are considering the switch to XML schema and I was curious about the schema location. I started out per discussions on the list which indicated that the xsi:schemaLocation should point to the urn:isbn... and to a local copy of the XSD, eg: <ead xmlns= "urn:isbn:1-931666-22-9" xmlns:xlink= "http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:isbn:1-931666-22-9 ../schemas/ead.xsd"> Normally, for other schemas, we've been referencing an official xsd at the namespace, so for MODS, <mods xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.loc.gov/mods/v3" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-1.xsd"> So I tried that out on one of our EADs, so: <ead xmlns= "urn:isbn:1-931666-22-9" xmlns:xlink= "http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:isbn:1-931666-22-9 http://www.loc.gov/ead/ead.xsd"> And it validated, ie it was able to find the .xsd quite easily. What is the recommendation, reference the online version, or a local copy of the XSD? Thanks, Joseph Greene Irish Virtual Research Library and Archive Project (HII), http://www.ucd.ie/ivrla James Joyce Library, UCD, Belfield, Dublin 4.