In addition to the Black Lunch Table project, which focuses on Visual artists from the African Diaspora, that James mentions below -- the GLAM projects for Colección Patricia Phelps de Cisneros ("CPPC") and WIKIarte, which focus on Latin American art, are both using the catalog P972 as well.
I want to be transparent about this usage. It has been incredibly impactful, and as CPPC prepares for a Commons donation of public domain images -- that are artworks -- and that have Creator templates and are fully Wikidata-ified, this catalog will be mission critical to tracking and querying the items.
Without this catalog property, it would be impossible to collocate the various projects. Especially as the metadata is not a large dataset, but is being painfully and manually input, often one by one. The metadata from the various sources is not in a dataset, and is constantly moving, changing, and expanding.
- Erika