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University Libraries

University Libraries

University Libraries

Interlibrary Loan

Interlibrary Loan Information

Interlibrary Loan (ILL) staff are available at the Perlmutter Lending Desk to answer questions. You can also contact ILL staff at 303-871-2497 or via email.
Logon to your ILL account

What is Interlibrary Loan?

Interlibrary Loan is an international service in which library materials are made available from one library to another and ultimately to the designated library user to meet their information needs.  Interlibrary Loans are meant only for personal study, scholarship, or research needs and may not be further distributed.

Who Can Use Interlibrary Loan?

Current students, staff, and faculty of the University of Denver are eligible to use Interlibrary Loan. Alumni may also request material through Interlibrary Loan. You may obtain an Alumni Card at the Alumni Office.

(Law students must use the DU Law Interlibrary Loan office. Iliff students must use the Ira J. Taylor Library.)

When Should I Use Interlibrary Loan?

For assistance identifying appropriate resources for research, contact a Reference Librarian.

  1. Please check University Libraries Catalog or ask a Reference Librarian to be sure we do not have the item(s) you need.
  2. Then, try Prospector for faster delivery of books. Prospector is a regional self-service, rapid delivery borrowing service. Items requested via Prospector will be delivered to Main Library and you will receive an email when your item is ready. 
  3. Complete an Interlibrary Loan Request if needed. Request material through Interlibrary Loan if it is unavailable from University Libraries or Prospector.
  4. Interlibrary Loan requests can be made directly from some library databases using ArticleLinker. 

What is the Difference Between Request It (Paging) and Interlibrary Loan?

"Request It" is used for materials owned by University of Denver Libraries.  Interlibrary Loan is used to request materials not available in our collection.

Please note: the status or listing of your ILL materials will not be reflected on your main Library account. You must login to your ILL account to view ILL materials.

Article Scanning

Articles from materials held in Offsite Storage may be requested for scanning. The material will be pulled and scanned by Document Delivery staff within approximately 24 hours, Monday - Friday. You will receive an email when your article is ready. The article will be available for download as a PDF on your Interlibrary Loan account for 30 days.

Place a request for article scanning

Arrival of Material

Articles will be delivered to your ILL account as PDFs that you can download, typically within 5-7 working days. Hardbound material arrives within 7-10 working days. Occasionally items may not be obtainable due to scarcity, lending policies of owning institutions, etc.

Your materials will be placed on the shelf at the Lending Desk and you will be notified by email. You will need your DU ID to pick up hardbound material. Articles will be delivered electronically in PDF form to your ILL account. Note: If material is designated "In-Library Use Only," it can only be used inside Main Library.


You can return material to the book drops or to the Lending Desk.


You must place a renewal on ILL items at least 2 days before the item is due. Simply logon to your ILL account and select "Checked Out Items" to renew. Please note that renewals cannot always be granted. The decision is based on the lending libraries' policies.


It is important to maintain good working relationships with libraries that loan to us. Our borrowing privileges can be revoked by lending libraries if patrons do not return materials on time. Overdue materials may result in a loss of an individual's Interlibrary Loan privileges. Charges for book replacements are determined by the lending institution and can exceed $100.00.

Lending Policies for Libraries and Institutions

 Mailing Material

If you are a distance student and would like to see if you qualify to have your library material mailed to you, please visit the Library Mailing Policy page.