Harvard thumbnail mapping change/fix


From: Scott Williams <scott@dp.la>
Date: Thursday, August 6, 2020 at 11:13 AM
To: "Gogel, Wendy M." <wendy_gogel@harvard.edu>, "ingest@dp.la" <ingest@dp.la>
Cc: Michael Della Bitta <michael@dp.la>, Shaneeˊ Murrain <shanee@dp.la>, "Venti, Vanessa" <vanessa_venti@harvard.edu>, "Wendler, Robin" <robin_wendler@harvard.edu>, "Wones, Suzanne" <suzanne_wones@harvard.edu>
Subject: Re: Missing Thumbnails in Harvard Harvest

Hi Wendy --

This looks like it needs to be a mapping change on our part to also include occurrences within the <mods:relatedItem type="constituent"> parent. I can add a ticket for this work and get it implemented before your next ingest.


Please let me know if you have questions or concerns.


With thanks,




On 8/5/20 9:56 AM, Gogel, Wendy M. wrote:

Hi, Scott -


Vanessa and Robin looked into the issue of the missing thumbnails (thank you both!).


From what we can tell in most of the cases, if the thumbnail link appeared in a <mods:relatedItem> element it was not converted into the DPLA record.


In the Harvard OAI MODS records, links to thumbnail images will be identifiable in one of two places:


1. <mods:location><mods:url displayLabel=”Thumbnail”>


2. <mods:location><mods:url access="preview">


Often both attributes are present in the <mods:url> element, but either is sufficient. The parent <mods:location> element can appear at the MODS root level or within a parent element <mods:relatedItem type="constituent">. It does not matter whether these thumbnail/preview <url> elements appear within the same parent MODS <location> as the <mods:url access="object in context"> elements.”


If this is the problem, should this go into our mapping or our dashboard?


Don't hesitate to let us know if you have any questions.


Thank you,




Wendy Marcus Gogel

Manager of Digital Content and Projects

Harvard Library Digital Strategies and Innovation







Scott Williams



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