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Except for the Britannica Internet Guide, which is available to users with Northwestern NetIDs, all these resources are freely available online.
Virtual library of Internet resources relevant to faculty, students, and research staff at the university level.
A searchable, annotated subject directory of Internet resources selected and evaluated by librarians. ipl2 is the result of a merger of the Internet Public Library (IPL) and the Librarians' Internet Index (LII).
Virtual Reference Shelf
Internet resources compiled by the Library of Congress.
WWW Virtual Library
Catalog of websites compiled by volunteer experts in various fields.