Interlibrary Loan (ILL)

Interlibrary Loan (ILL)
Name	Interlibrary Loan (ILL)
Services	Borrowing, lending, document delivery, resource sharing
Parent organization	Libraries, consortia, networks

Interlibrary Loan (ILL) is a cooperative library service that enables libraries to borrow and lend materials to fulfill patron requests for items not held locally. It connects collections across institutional boundaries so that patrons at the Library of Congress, British Library, Bibliothèque nationale de France, New York Public Library, and Harvard University can access resources from MIT, Stanford University, Oxford University, Cambridge University, and other major repositories. ILL operations commonly involve consortia such as OCLC, Research Libraries UK, CARL, NHS Library and Information Services and national systems like Panizzi-style cataloging programs and regional networks.

Overview

ILL functions as a resource-sharing mechanism among institutions including public libraries, academic libraries, special libraries like the Smithsonian Institution libraries, legal libraries such as the Law Library of Congress, medical libraries like Mayo Clinic libraries, and national libraries such as the National Library of Medicine. Typical materials requested include monographs from holdings at Princeton University, journals from Elsevier collections, dissertations deposited at ProQuest, microforms housed at the National Archives (United Kingdom), archival materials from the National Archives and Records Administration, and unique items in university presses like Cambridge University Press and Oxford University Press. Networks coordinate via organizations such as ARL, IAML, IATUL, SPARC, and regional consortia like HathiTrust, Digital Public Library of America, and Europeana.

History

The practice of interlibrary lending predates formal ILL protocols, with early cooperative exchange evident among institutions like the Bodleian Library, Bibliothèque Sainte-Geneviève, and the Royal Society. Formalization accelerated in the 19th and 20th centuries with initiatives from the American Library Association, standardization efforts influenced by figures associated with the Library of Congress, and international coordination under the aegis of bodies such as UNESCO and the International Federation of Library Associations and Institutions. Technological shifts tied to projects like OCLC WorldCat, the development of Z39.50, and adoption of protocols influenced by the Dublin Core metadata model reshaped the systems that manage requests, paralleling library innovations at institutions including Yale University, Columbia University, University of California, and University of Toronto.

Operations and Procedures

ILL workflows typically include patron request intake (via discovery systems such as WorldCat or institutional catalogs at Princeton, Cornell University, Brown University), bibliographic verification referencing authorities like Library of Congress Subject Headings and identifiers such as ISBN and ISSN, request routing over networks like OCLC or regional systems, lending decisions guided by circulation policies exemplified at Seattle Public Library and New York Public Library, and delivery through mail, electronic document delivery, or digitization services at repositories including Google Books scanning partners and institutional repositories at Harvard Dataverse. Participating staff rely on standards and request forms shaped historically by the American Library Association and operationalized via interlibrary loan policies at institutions such as University of Michigan and University of Chicago.

Eligibility and Policies

Eligibility for borrowing or lending varies among institutions like Public Library of Science-affiliated libraries, special collections at Smithsonian Institution, or corporate libraries such as IBM Research Library. Policies address patron categories (students at Massachusetts Institute of Technology, faculty at Columbia University, members at New York Public Library), loan periods akin to those in university systems at UCLA and University of Edinburgh, fees modeled by consortia such as ARL and regional arrangements like those used by State Library of Queensland. Restrictions and exclusions often reflect preservation concerns for rare materials at the Bibliothèque nationale de France, legal deposit rules at the National Library of Australia, and licensing terms negotiated with publishers like Elsevier, Springer Nature, and Wiley.

Technology and Systems

Modern ILL leverages integrated library systems (ILS) from vendors such as Ex Libris, Innovative Interfaces, and SirsiDynix, resource-sharing platforms like OCLC WorldShare Interlibrary Loan, discovery services represented by EBSCOhost, ProQuest, JSTOR, and authentication systems like Shibboleth and OpenAthens. Protocols including ISO 10160, ISO 10161, and legacy standards like Z39.50 interact with metadata schemas such as Dublin Core and identifier systems like DOI to route requests, manage copyright checks, and log transactions for analytics performed by initiatives like COUNTER and Crossref.

Legal and Copyright Issues

ILL practice is constrained by national copyright statutes such as the Copyright Act of 1976 in the United States, directives from the European Union including the InfoSoc Directive, and case law exemplified by decisions from courts like the Supreme Court of the United States and judicial interpretations influenced by disputes involving publishers such as Elsevier and organizations like Authors Guild. International agreements, including Berne Convention provisions, and licensing frameworks negotiated by groups such as ALPSP and SPARC affect permissible copying, interlibrary document delivery, and digitization. Libraries apply risk assessments informed by precedents like the Cambridge University Press v. Patton litigation and guidance from national agencies including the U.S. Copyright Office and Intellectual Property Office (UK).

Impact and Challenges

ILL expands access across institutions like Harvard University, University of Oxford, University of Tokyo, National University of Singapore, and public systems including New York Public Library and Bibliothèque nationale de France, supporting research, teaching, and professional practice at organizations such as World Health Organization, United Nations, International Monetary Fund, and firms like McKinsey & Company. Persistent challenges include funding pressures observed in budgets at State Library of New South Wales, copyright and licensing conflicts involving Elsevier and Springer Nature, digitization backlogs in archives like the National Archives (United Kingdom), balancing preservation at repositories such as the Bodleian Library with access, and interoperability across systems from vendors like Ex Libris and Innovative Interfaces. Emerging opportunities link ILL to open access initiatives championed by Plan S, institutional repositories at Harvard DASH, and collaborative infrastructures such as HathiTrust and Europeana.

Category:Library services