The URLs in the "WA Theatre Posters, Programs, Ephemera" dataset contain a mixture of digitised images from the collection and the permanent bibliographic record in the State Library of Western Australia catalogue:
URLs starting with “https://purl.slwa.wa.gov.au” or “https://slwa.wa.gov.au/images” are digitised items.
URLs starting with “https://encore.slwa.wa.gov.au" are bibliographic records.