» Canada Instititue for Scientific and Technical Information
   Canadian research library for science, technology, engineering, and medicine.
   http://cisti-icist.nrc-cnrc.gc.ca/

» Herbert C. Hoover Building Library
   Serving the US Department of Commerce.
   http://www.osec.doc.gov/lib/

» NIEHS Library
   US National Institute of Environmental Health Sciences.
   http://library.niehs.nih.gov/

» National Agricultural Library
   Part of the Agricultural Research Service of the US Department of Agriculture.
   http://www.nalusda.gov/

» National Institutes of Health Library
   Serving the US National Institutes of Health, with self-service access to others.
   http://nihlibrary.nih.gov/

» National Library of Education
   US federal government's resource center for education information.
   http://www.ed.gov/NLE/

» National Library of Medicine
   US national provider of health-related library and information services.
   http://www.nlm.nih.gov/

» The National Transportation Library
   US repository for transportation information.
   http://ntl.bts.gov/

» U.S. Department of the Interior Library
   Focusing on the natural and social sciences; law; economics; management and use of natural and cultural resources; and the cultures and well-being of American Indians and Native Alaskans.
   http://library.doi.gov/

» US National Information Infrastructure Virtual Library
   Access to documents and information for the US component of Global Inventory Project (GIP) and the international registry for the G8 Global for Small and Medium-Sized Enterprises (SME) Testbeds.
   http://nii.nist.gov/