<div dir="ltr"><div dir="ltr">Hi Erin,<div><br></div><div>I have some experience with the 340 field, although it is not a field I would manually code for an original record. I have seen the 340 on a handful of records from OCLC for the rare materials that I catalog at NYU. It is typically coded as follows:</div><div><br></div><div class="gmail-guidelines">
<div class="gmail-subfields">
<div class="gmail-subfield">
<div>
<div class="example"><table>
<tbody>
<tr>
<td><strong>340</strong></td>
<td colspan="9"><strong>##</strong><strong>$m</strong>4to<strong>$2</strong>rdabf  </td></tr></tbody></table></div></div></div></div></div><div> </div><div>The 340 field would duplicate the information contained in 300 $c if you have indicated both format and shelf-dimensions in that subfield.</div><div><br></div><div>It is not indexed in our OPAC (Aleph) at all. </div><div><br></div><div>Hope this helps!</div><div><br></div><div>William</div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Mar 11, 2022 at 1:14 PM Erin Blake <<a href="mailto:erin.blake.folger@gmail.com">erin.blake.folger@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Help! I've got a golden opportunity to influence OPAC design for all clients in a vendor meeting on Monday, but our current records make so little use of <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.loc.gov_marc_bibliographic_bd255.html&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=Cg8xhCakqlNutsJbp0UK5Bv9B6XdDXRHmRQLr1TCAkY&m=H5tjFLa5EHEY1KGj4Knln94hLAALJGNbKTwDsUxZ6ExzsYLaAZ1Raeu5e3rkPhcm&s=WbDwWVol-UsRLoRHcdwXdv4LdLdKUg3N8uuS22gXCbo&e=" target="_blank">MARC 255 - Cartographic Mathematical Data</a> and <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.loc.gov_marc_bibliographic_bd340.html&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=Cg8xhCakqlNutsJbp0UK5Bv9B6XdDXRHmRQLr1TCAkY&m=H5tjFLa5EHEY1KGj4Knln94hLAALJGNbKTwDsUxZ6ExzsYLaAZ1Raeu5e3rkPhcm&s=BY4DT0AcNdmfCE67QjkGNQ0mqAkdfLiWzW8JkwJMJj4&e=" target="_blank">MARC 340 - Physical Medium</a> that I don't have any good examples.<div><br></div><div>If your OPAC displays them well (or at all!) I'd love to hear from you sooner rather than later.</div><div><br></div><div>Thanks,</div><div><br></div><div>Erin.<br><div><br></div><div><div><div dir="ltr"><div dir="ltr"><p class="MsoNormal"><a name="m_5173705100894885476_SignatureSanitizer__MailAutoSig"><span style="font-size:7.5pt;font-family:Arial,sans-serif">______________________<br></span></a><a name="m_5173705100894885476_SignatureSanitizer__MailAutoSig"><span style="font-size:7.5pt;font-family:Arial,sans-serif">Erin Blake, Ph.D.  |  Senior Cataloger  |  Folger
Shakespeare Library  |  201 E. Capitol St. SE, Washington, DC,
20003  |  </span></a><a href="mailto:eblake@folger.edu" target="_blank"><span style="font-size:7.5pt;font-family:Arial,sans-serif;color:blue">eblake@folger.edu</span></a><span style="font-size:7.5pt;font-family:Arial,sans-serif"> 
|  </span><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__protect-2Dus.mimecast.com_s_-2Dt5RCjRgpBtArRXC7R7-5F2-3Fdomain-3Durldefense.com&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=Cg8xhCakqlNutsJbp0UK5Bv9B6XdDXRHmRQLr1TCAkY&m=H5tjFLa5EHEY1KGj4Knln94hLAALJGNbKTwDsUxZ6ExzsYLaAZ1Raeu5e3rkPhcm&s=kHfE8Ls8Rz8NABjsD1oyz804hkVFC_4qiKhohc-gprA&e=" target="_blank"><span style="font-size:7.5pt;font-family:Arial,sans-serif;color:blue">www.folger.edu</span></a><span style="font-size:7.5pt;font-family:Arial,sans-serif">  
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<p class="MsoNormal"> </p></div></div></div></div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr">William M. Owens, MSLIS, MA<div>Rare Book Cataloging Librarian</div><div>Special Collections<br></div><div>Elmer Holmes Bobst Library </div><div>Knowledge Access and Resource Management Services (KARMS)<br></div><div>70 Washington Square South</div><div>New York, NY 10012<br></div></div></div></div></div></div></div>