Stephanie A.,
At LC we have specific guidelines for the use of extptr in the EAD
2002 XML finding aids.

All extptr/@href are an entity found in the doctype. This means that
it is necessary to use the unparsed-entity-uri() function to capture
the http link or handle string.

Concerning the extptr for the seal that should appear on the title
page of the HTML/PDF document, the following template appears in the
stylesheet from the conversion toolkit (EAD_2002_HTML_conv-1.xsl):

<!-- lc seal -->
<xsl:template 
  match="
    extptr[
      parent::publisher 
      and 
      ancestor::publicationstmt
    ]
 "
>
  <img 
    align="top"
    src="{unparsed-entity-uri(@href)}"
  >
    <xsl:attribute name="alt">
      <xsl:choose>
        <xsl:when test="string-length(@title)&gt;1">
          <xsl:value-of select="@title"/>
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="unparsed-entity-uri(@href)"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:attribute>
  </img>
</xsl:template>

This stylesheet is available from the conversion toolkit site.

XSLT Engine: SAXON 6
XSLT Version: 1.0

Mike Ferrando
Library Technician
Library of Congress
Washington, DC
202-707-4454

EAD 1.0 to 2002 Conversion Toolkit
http://lcweb2.loc.gov/music/eadmusic/eadconv12/ead2002_r.htm

LoC Best Practices EAD 2002
http://www.loc.gov/ead/practices/lcp2002.html (see: External Linking)


--- Stephanie Ashley <[log in to unmask]> wrote:

> Hi, 
> 
> Would anyone be willing to share their xml encoding for an
> illustrative
> image on a finding aid" title page" (using <extptr> rather than
> <dao>) and
> the corresponding part of their xsl stylesheet? We're using a
> stylesheet
> adapted from the Cookbook but my xsl skills are very rudimentary
> and I
> didn't do the original adaptation, so tend to be able to make
> further
> modifications only when I have examples to work with.
> 
> thanks!
> 
> Stephanie Ashley
> Archives of American Art
> Smithsonian Institution
> 


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