The PCC Task Group Report will report on the work from the inception of the TG to date. This will include a technical discussion around entification of MARC library data and comments on the status of existing infrastructure within the Libraries to support this work.

Motivation: The PCC Task Group on URIs in MARC [1] established by the Steering Committee in September 2015 was charged to: (1) identify and investigate issues surrounding the use of identifiers in MARC records; (2) develop guidelines, policies, (3) formulate work plans to implement identifiers in $0 and other fields and/or subfields in ILSs and PCC?affiliated utilities; (4) in consultation with the MARC Advisory Committee, technologists, and other stakeholders, take appropriate measures ensuring library data will transition smoothly from MARC environment to a Web-based and linked open data platform or service. To that end, the Task Group conducted pilot tests throughout 2016, and compiled findings and comments that served the foundation of several MARC proposals at the 2016 American Library Association Annual Meeting. The papers covered functionality of URI/IRI in MARC subfields such as $0, $4, $o, etc. The goal of the proposed refinements and expansion of usage of these MARC subfields is to prepare and extend the richness of library data to the wider information world with no or little programmatic intervention. The TG’s efforts benefit information professionals and researchers beyond library borders.