Essential Tools for Effective Referral Services in Libraries

When a student walks into a library needing a rare manuscript, a niche dataset, or contact details for a domain expert, the library cannot always provide it from its own shelves. No single collection can hold everything. This is where referral services step in, acting as a bridge that connects users to resources, institutions, and people beyond the library’s walls. But a referral is only as good as the tools behind it. To point users in the right direction confidently, librarians rely on a set of well-developed instruments, from collective catalogues to specialised digital databases. This post breaks down the essential tools that make referral services accurate, fast, and genuinely useful.

Why tools matter in referral work 🔗

Referral service is a specialised form of reference work. Instead of handing over a book or article from the local collection, the librarian directs the user to an external source that can better meet their need. That source might be another library, a research institute, a government agency, or a subject specialist. To make these connections reliably, the librarian needs accurate, up-to-date information about who holds what and where.

This is the core function of referral tools. They tell the librarian which library across the country owns a particular journal, which institution maintains a specialised archive, and which expert works in a given field. Without these tools, a referral becomes guesswork. With them, it becomes a precise, evidence-based pointer. The shift from paper-based registers to digital systems has made this process dramatically faster, allowing a single search to reveal holdings across thousands of libraries at once.

Union catalogues: the foundation of referral 🔗

A union catalogue is a combined catalogue that records the holdings of several libraries in one place. Instead of searching each library’s catalogue separately, a user runs one search and sees which institutions hold the item and where they are located. This makes the union catalogue the single most important referral tool in any librarian’s kit.

What a union catalogue covers 🔗

A well-built union catalogue is not limited to books. It typically brings together several categories of material under one search interface:

• Books and monographs: The largest segment in most union catalogues, covering reference works, textbooks, conference proceedings, and general titles.
• Periodicals and serials: Union lists of current and back-volume journals tell users which library subscribes to a specific periodical, which is vital because journal collections are expensive and unevenly distributed.
• Special collections: Theses, dissertations, manuscripts, audiovisual recordings, and rare materials that exist in only a handful of locations. These are often the items users most need a referral for, because they are nearly impossible to find through a general web search.

Benefits for users and libraries 🔗

The advantages of a union catalogue work in two directions. For users, it means greater access to resources, since they can locate materials held anywhere in the network. It also saves time, because one search replaces the tedious process of checking many catalogues one by one. For libraries, it supports resource sharing and helps reduce wasteful duplication, since institutions can see what others already hold before acquiring expensive material. This collective visibility is exactly what makes interlibrary loan and document delivery possible.

Digital tools that power modern referral 🔗

The traditional union catalogue has evolved into a family of powerful online systems. These digital tools combine the reach of a union catalogue with the speed of the internet, giving librarians instant access to holdings data from across the country and the world.

OCLC WorldCat: the global catalogue 🔗

WorldCat, maintained by the Online Computer Library Center (OCLC), is the world’s most comprehensive database of library collections. It aggregates bibliographic and holdings records from libraries across more than a hundred countries. The scale is enormous: WorldCat holds over 500 million bibliographic records representing billions of physical and digital items from libraries worldwide, and it grows by roughly two million records a year.

For referral work, WorldCat’s strength is that it shows which libraries hold a specific item. Because WorldCat is the foundation of OCLC’s resource sharing network, librarians can identify the holding institution and then initiate an interlibrary loan request to borrow the material directly. This makes it possible for a researcher in one country to access a dissertation or rare report held in another. WorldCat covers books, e-books, journals, dissertations, audiovisual materials, maps, and archival collections, making it a one-stop discovery layer for global holdings.

DELNET: resource sharing across India 🔗

The Developing Library Network, known as DELNET, is one of the most significant resource-sharing networks for libraries in India. Started at the India International Centre Library in 1988 and registered as a society in 1992, it was supported by the National Informatics Centre and the Ministry of Culture, Government of India. Its operating motto centres on networking libraries and spreading knowledge through shared resources.

DELNET now connects more than 10,000 institutions across all states and union territories, including universities, colleges, research and development organisations, and medical and hospital libraries. Its core contribution to referral work is an extensive set of union catalogues. DELNET has compiled a Union Catalogue of Books, a Union List of Current Periodicals, a Union Catalogue of Periodicals, a Database of Indian Specialists, a Database of Periodical Articles, a Union List of Video Recordings, and an Urdu Manuscripts’ Database, among others. Through these, a member library can locate a needed book or journal in another member institution and arrange to borrow it on interlibrary loan for a short period.

IndCat: the catalogue of Indian universities 🔗

IndCat is the Online Union Catalogue of Indian Universities, developed and managed by the INFLIBNET (Information and Library Network) Centre. It is an integrated catalogue of books, theses, and serials available in major university libraries across the country. For students and researchers in the academic sector, IndCat is often the first place to check when a needed title is missing from the local collection.

The scale of IndCat is substantial. According to the INFLIBNET Centre, the catalogue contains bibliographic records contributed by hundreds of Indian universities across all disciplines. Its book database alone holds over 16 million unique titles with holding details from more than 400 university and institute libraries, alongside separate databases for serials and theses. A particularly useful feature for research students is that theses records in IndCat link to full-text content in Shodhganga, the national repository of Indian doctoral theses.

What makes IndCat especially accessible is that it is freely available to the entire academic community around the clock, with no access charges. Beyond referral and interlibrary loan, librarians also use it for collection development, copy cataloguing, and retrospective conversion of records, which shows how a single tool can serve several library functions at once.

Custom databases: building local referral assets 🔗

Global and national catalogues handle published materials well, but referral work often involves connecting users to people and organisations rather than documents. A researcher may need to speak to a subject expert, locate a specialised institution, or find a service provider in a particular field. For these needs, libraries build their own custom databases tailored to their community.

Directories of experts and specialists 🔗

An expert database is a local inventory of subject specialists, often including their field of expertise, affiliation, and contact information. When a user has a question that exceeds the library’s resources, the librarian can refer them to a named expert who can help. This concept is not new at the national level either. INFLIBNET maintains an “experts” database alongside its union catalogues, and DELNET’s Database of Indian Specialists serves a similar purpose. A library can build a smaller, focused version of this for its own region or subject strengths.

Inventories of institutions and services 🔗

Beyond individuals, libraries can compile records of institutions, research centres, professional bodies, and service organisations relevant to their users. A library serving an engineering college, for example, might maintain a list of standards bodies, testing laboratories, and patent offices. When a query arrives that the library cannot answer directly, this inventory lets the librarian make a confident, specific referral instead of a vague suggestion. Research libraries at institutions such as the Indian Institute of Science have long worked in tandem with national and international databases to widen the pool of resources they can point users toward.

Why local databases are worth the effort 🔗

Building and maintaining a custom database takes ongoing work, since contact details and affiliations change. But the payoff is significant. A local database reflects the specific needs of the library’s community in a way that no global catalogue can. It captures the unwritten knowledge of who to call and where to send a user, turning a librarian’s experience into a shared, searchable resource that survives even when individual staff move on.

Bringing the tools together 🔗

No single tool covers every referral situation. The most effective referral service layers these tools according to the query. For a published book or journal, a union catalogue such as IndCat or DELNET pinpoints the holding library. For materials held abroad, WorldCat extends the search globally. For a question that needs human expertise or an institutional contact, a custom local database fills the gap that catalogues cannot. Used together, these tools let a librarian respond to almost any request with a precise next step, which is the entire purpose of referral work.

What do you think? If your library could build only one custom database to support referral services, would you choose a directory of subject experts or an inventory of specialised institutions, and why? And as union catalogues become more powerful, do you think the human judgement of a librarian still adds something that a search interface cannot replace?

References

1. https://www.oclc.org/en/worldcat.html
2. https://en.wikipedia.org/wiki/OCLC
3. https://www.oclc.org/en/worldshare-ill.html
4. http://delnet.in/about-us.html
5. http://delnet.in/index.html
6. https://indcat.inflibnet.ac.in/index.php/main/faq
7. https://indcat.inflibnet.ac.in/