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Interlibrary Loan (Collections Access, Loan and Management Division)
  Home >> Requesting via OCLC, ISO, or Email

Sending a Request via OCLC, ILLiad Web Client, or Other Means

Interlibrary loan requests may be sent electronically through OCLC or the ILLiad Web Client; or, for foreign libraries, email addressed to [email protected] The Library of Congress does not currently support other ISO-compliant Interlibrary Loan systems.

OCLC: The symbol for The Library of Congress holdings in OCLC is DLC, and items can be ordered by entering this symbol in the lender field of the ILL workform for the record in the OCLC WorldShare system.

ILLiad Lending Web Page: The Library of Congress ILLiad implementation allows libraries to register as ILL borrowers directly with LC's ILLiad system. See First Time Registration for ILL for details. Upon receiving a completed registration form, LC ILL staff will create an ILLiad user account for your library, and send you a user ID and password via email, which you may then use to log in directly to LC's ILLiad server as a web client. Completed registration forms are vetted for authenticity before user IDs are supplied. The Library of Congress does not do unmediated lending on Interlibrary Loan, only libraries are recognized as Interlibrary Loan "patrons."

Mail, Fax, ISO ILL: The Library of Congress no longer accepts paper or fax ILL requests from libraries in the United States. Foreign libraries, see Loans to Libraries Outside the U. S. While technically compatible with ISO ILL, the Library of Congress IT infrastructure cannot support other ISO-compliant ILL systems.

Before sending an interlibrary loan request, please note the following:

Avoid requesting:

  • Items represented only by a Cataloging in Publication (CIP) record. These are identified by looking at two different fields in the cataloging record
    300 field: no pages or size yet specified (filled in when item is received)
    263 field: proposed publication date still listed (deleted when item is received)
  • Books that are in print and procurable through ordinary trade channels (except for U.S. Government agencies requests)
  • Materials classified as genealogy, heraldry, or U.S. local history unless in microform (CS, CR and F below 1000)
  • Bound and unbound periodicals, except for individually cited articles that can be photocopied
  • Rare materials and items published before 1801, excepting those in microform
  • Motion picture films, photographs, and sound recordings
  • Commercially available dissertations (except to U.S. government agencies)

In addition, please note:

  • The RRS Division does not future date requests for CIP, Not on Shelf, Lack, and In Process items.
  • Allow a minimum of two weeks for most monograph and journal article requests and a month, or more, for newspaper and serial microfilms, music items, maps, Near Eastern materials, or other requests that must be transferred to custodial divisions.
  • LC generally does not collect journals or monographs in clinical medicine, clinical psychology, nursing, and technical agriculture even though there may be LCCNs for these items. For materials in these categories, contact the National Library of Medicine or the National Agricultural Library.
  • Records with the holdings code "rqm" in OCLC are not necessarily owned by LC. These represent listings from the National Register of Microform Masters.
  • Complimentary copies of up to 25 exposures of many non-circulating items (excluding newspapers) will be provided whenever possible, and will be delivered electronically to the borrowing library.

Requests for more extensive fee-based copying should be sent directly to the Library's Duplication Services, a cost recovery operation separate from the CALM Division. The address is:

Duplication Services
101 Independence Avenue, S.E.
Library of Congress
Washington, DC 20540-5234
e-mail: [email protected]
Fax: 202-707-1771
Phone: 202-707-5640
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  Home >> Requesting via OCLC, ISO, or Email
  The Library of Congress >> Researchers
  April 11, 2022
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