Last Updated: Jul 11, 2019     Views: 58

Public patrons around the world may request and receive interlibrary loans from the USAHEC. However, the USAHEC is a lender of last resort, meaning that we will only complete requests if no other library has an available copy. Even if no other library has the requested book or document and the USAHEC is the only available repository, there are additional requirements that the request must meet:

  • The request must be no older than 1960
  • If a book, there must be a minimum of two copies held at the USAHEC
  • If a unit history, there must be a minimum of three copies held at the USAHEC


If the ILL request meets at least two of those three stipulations, the book or document will be sent to the patron. The USAHEC will not complete requests for periodicals, manuscripts, microfilm, or audiovisual material. If the request cannot be sent in its physical format (it does not meet the requirements stated above), the USAHEC may send up to 10 pages of material as a photocopy at no additional charge. Physical copies that are sent out will be loaned for 60 days with the option for one renewal, which allows the request to be out on loan for an additional 60 days.

To request a book or document through interlibrary loan, patrons may contact their local library and the librarians there will submit the request.

To contact Access Services at the USAHEC:


Phone: 717-245-4300

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