Calisphere is the CDL's service for aggregating digital collections from libraries, archives, and museums in California. Calisphere can help promote and extend the usage of your digitized (or born-digital) images, documents, audio recordings, video files, and datasets!

Contributing through harvest

Calisphere is based on a harvest model, where we pull in metadata that points to content hosted on your own digital collections system. Most contributors have found the harvest process to be quick and easy. Although it requires some set-up at the beginning, once the process is in place, we can easily grab new collections (and pick up changes and additions to existing collections). The other articles in this section explain the ins and outs of harvesting.

Basic requirements

In order to contribute digital collections to Calisphere through the harvest, you must have digital content files and associated metadata; they must be hosted on some kind of system or site; and they must be open and publicly available (we do not support content with access restrictions at this time). Read more about supported sources and formats. If you're not sure whether you meet these requirements, ask us! We've been able to get data out of a lot of different systems, from OPACs to homegrown digital collections sites.

What about METS?

We are no longer supporting the METS workflow for new contributors, in favor of the new harvest workflow. However, we will accept METS from current contributors with an established profile and process; contact us if you represent one of these institutions and require assistance with the METS submission process.

It's a twofer!

We send all data in Calisphere up to the Digital Public Library of America (DPLA)—meaning you'll contribute to both the statewide and the national aggregations at the same time. You also have the option to share your collections further with Wikimedia Commons, via our DPLA connection.