Interlibrary Loan

Please be aware that due to the number of libraries around the world closing or restricting their Interlibrary Lending due to COVID-19, we may be slow to fill/unable to fulfill your requests. We will notify you as soon as possible, if that is the case.

Interlibrary Loan (ILL) supports the instructional, research, and scholarly activities of currently employed or enrolled West Lafayette faculty, staff, and students by obtaining research material not owned by the Purdue University Libraries. Visitor cards do not include access to our Interlibrary Loan services.

Interlibrary Loan uses the ILLiad system for requesting materials. Materials requested through UBorrow will also be delivered through Interlibrary Loan and uses ILLiad for managing your requests. If you need help using the ILLiad system, please contact our office at (765) 494-2800 or email us at

What is UBorrow?

UBorrow is a special search interface to use for print books not found from the Purdue University Libraries. These print materials come from Big Ten libraries faster, for longer check out periods, and no recalls (unless the book is needed for course reserve by the lending library)!

Starting Spring 2020: you no longer need to search UBorrow. Simply place an ILL request (use the login link in the upper right-hand corner) and we will search UBorrow for you.


Place your requests using the secure ILLiad System. Active Purdue Career ID is required for login. If a Purdue Libraries book that you need is currently checked out, you may place an interlibrary loan request for it and we will borrow it from another library.

Delivery Methods

You will be notified when the material you requested is ready for pick-up or download. The chart below outlines how your request will be processed:

Document Type For Faculty... For Grads/Undergrads
Book, Report, Dissertation, Conference Proceeding We deliver the book to your office The books will be held at the Interlibrary Loan Office in the HSSE Library. You will be notified when your items are available.
Articles, Book Chapters that are available Electronically We will send you an email with information explaining how to access the electronic material.
Articles, Book Chapters that are NOT available Electronically An electronic copy of the article or chapter will be posted to the ILL system. When the article is ready, you will receive an email message with instructions for accessing it.

More Information about ILL Service

Turnaround Time

Turnaround Time depends on many variables. Here is current turnaround time information for items requested through interlibrary loan. (Delivery of locally-owned items differ. See Document Delivery section for service and eligibility details.)

Time Span Photocopies Book Loans
Filled within 5 days 64% 38%
Filled within 10 days 87% 81%
Filled within 15 days 97% 96%

Quantity of Requests

A user may submit as many requests as necessary. However, large numbers of requests from a single user may not all be handled at the same time.

Due Dates for Book Loans

To avoid penalties, please return loans by the date indicated on the book band. Return ILL books to the drop box near the ILL Desk (HSSE Library, 2nd floor).

Renewals for Book Loans

  • Renewals are often possible. Please place your renewal request online at least 3 days before an item is due. Online renewals cannot be placed on or after the due date. If the item is overdue, you will need to contact the ILL office at 494-2800 or
  • To request a renewal online, login to your Interlibrary Loan account. Click the “Checked Out Items” link in the menu on the left side of the page. Click the Transaction Number in front of the item you would like to renew. If the item is renewable, a red “Renewal Request” link will appear above the item information. Click the link to submit your renewal.
  • ILL staff will confirm the new due date by email usually a few days later when we have heard back from the lending library.


ILL staff notify users of overdue material. Failure to return ILL material on time, or to respond to a recall notice in a timely manner, may result in the loss of ILL and/or library privileges, and may also incur charges to cover the cost of the material plus overdue and/or processing fees.

Copyright Compliance

The Interlibrary Loan office complies with the U.S. copyright law and reserves the right to refuse a copying order if, in the staff's judgment, fulfillment of the order would involve violation of the copyright law.


The Libraries absorb the costs of most ILL transactions. In those rare cases when there would be a cost passed on to the requester, we will ask for your authorization in advance.

Document Delivery

The Libraries are pleased to offer comprehensive document delivery services for currently employed West Lafayette faculty, staff, and visiting scholars. What is document delivery? It is delivering the research material you need to your desktop or office quickly and efficiently. Document Delivery turnaround times may vary from the average during holidays and breaks.

If you request via ILL... will get... ...within approximately
A book owned by Purdue The book delivered to your office 2-3 business days
An article or chapter available in paper at Purdue An electronic copy of the article or chapter posted to a website 2 business days
Material available electronically to Purdue affiliated users An electronic copy of the article or chapter posted to a website 1 business day
The loan of a book report, dissertation, or conference proceeding not owned by Purdue The book delivered to your office 5-10 business days
Copies of an article, chapter, or paper not owned by Purdue An electronic copy of the article or chapter posted to a website 2-7 business days
*Some exceptions may apply
*Document Delivery turnaround times may vary from the average during holidays and breaks.

Frequently Asked Questions

How much does this service cost?
Nothing! The Libraries cover the cost of providing this service.
How do I place an order?
Click here for the order form.
Do I need to check in advance to see if an item is available on campus or not?
No, just place your request. Libraries staff will handle your request as an on- or off-campus order as needed.
Can I request eBooks through Interlibrary Loan?
Unfortunately, no. We can only deliver print books at this time. However, if we find print items available electronically (i.e. dissertations, archival materials, and other items) that are difficult to obtain in print via ILL, we will deliver PDFs to your account.
I'm on sabbatical away from the campus area. Will you mail a book to me?
Sorry, book delivery is only available to campus departments. Ask the university hosting your sabbatical work or a local public library about their interlibrary loan services. However, you can access electronic resources remotely (click here for details) or request electronic delivery of an article or chapter.
I'm a graduate research assistant or a graduate teaching assistant. Am I eligible for the service?
As a student employed at Purdue, your primary classification is as a student. We will scan and electronically deliver to students articles or chapters held in the Print Repositories. If the item you need is held elsewhere in the Purdue Libraries, you will receive an email notice with the location and call number.

Contact Us

Call the interlibrary loan/document delivery office at (765) 494-2800 or email us at

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ILL Hours

Mon-Thurs: 8:00am - 7:00pm
Fri: 8:00am - 6:00pm
Sat-Sun: Closed
*Hours and turnaround times may vary during holidays and breaks.

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