Include all Full View HathiTrust (Hathi Trust) content and not just Public Domain
HathiTrust collections are defined by access rights; materials that are fully accessible to users are within their Full View collection, which includes Public Domain, Open Access, Creative Commons, and other materials to which owners have given permissions for access. Materials restricted in access are defined as Limited - Search Only; these materials include those with copyright restrictions. These two categories, Full View and Limited - Search Only can be further refined by geographical region, for US or non-US. Info about access rights is at https://www.hathitrust.org/access_use and info about data files is at https://www.hathitrust.org/data.
The ExLibris CZ (and PCI) collections for HathiTrust do not align with the HathiTrust files available. Instead, the ExLibris collections are limited to Public Domain (only) Collections, which includes no Open Access/Creative Commons/Other Licensed content beyond the Public Domain; and Copyright restricted collections. These two categories are then further refined by US and non-US.
It would be much better to have access to the entire Full View HathiTrust collections; the restriction to Public Domain seems arbitrary and unhelpful, and it is not a restriction that HathiTrust makes itself. Since the data files are out there and made fully accessible for use, I sincerely implore ExLibris to use the data files or OAI harvest from HathiTrust to provide full and accurate access to the collections. The existing ExLibris CZ (and PCI) collections are extremely inadequate.
Our goal is to include records for all those materials to which users have full access but exclude records for copyright-restricted materials, which is not currently possible with the existing ExLibris collections, which either leave out accessible materials or include copyright-restricted.