Depository Programs	U.S Federal FDLP Desktop http://www.fdlp.gov/ Depository Library Directory http://catalog.gpo.gov/fdlpdir/FDLPdir.jsp United Nations United Nations Depository Libraries http://www.un.org/Depts/dhl/deplib/index.html Canada Depository Services Program http://dsp-psd.pwgsc.gc.ca/index-e.html Illinois Depository Programs at the Illinois State Library http://www.cyberdriveillinois.com/departments/library/what_we_do/depository_programs/home.html
General Indexes	Catalog of U.S. Government Publications http://catalog.gpo.gov This is a database of publications cataloged by the U.S. Government Printing Office from 1976 to the present.  It includes the ability to find a library near you that has the publication you are interested in.  Another interface is available from the UIUC Library at http://www.library.uiuc.edu/orr/get.php?instid=258121.   GPO Access http://www.gpoaccess.gov This site is an access point to information from all branches of the U.S. government as well as the Catalog of U.S. Government Publications.  Search inside laws and regulations here; also find U.S. Supreme Court cases, federal budget information, presidential speeches, and more.   UIUC Online Catalog http://www.library.uiuc.edu/catalog/ Use the "Quick Limits" or "More Limits" features to limit your search to the Government Documents Library collection, which extends back to the late 1970s. If you know you are looking for a government document, you can also limit an advanced search by using "Government Printing Office" (for federal information) as a publisher search or words from the name of the agency you are interested in as an author search.
Legislative and Regulatory Sources	LexisNexis Congressional UIUC Subscription http://www.library.uiuc.edu/orr/get.php?instid=258117 This site is an access point for material from the U.S. Congress since 1789.  Access the text of bills and laws, legislative histories, reports and hearings, and the Congressional Record as well as regulatory material.   Thomas (Library of Congress) http://thomas.loc.gov Most information on this site is available from the late 1980s forward.  It is designed for members of Congress to track legislation, and has useful features like tracking of nominations or budget legislation that are not available in LexisNexis.  There is no indexing of hearings in Thomas.
Statistical Sources	LexisNexis Statistical UIUC Subscription http://www.library.uiuc.edu/orr/get.php?instid=258185 Use the "Search Abstracts" screen and the subject list to find statistics published since the 1980s.  Often sources described in this index have been published for decades, so you may be able to use the online catalog to find earlier versions of sources described in this index.   Statistical Abstract of the United States http://www.census.gov/compendia/statab/  This reference source is used in almost every public and academic library to find basic statistics on a wide variety of subjects.  If you need more detailed statistics than are available here, every table is footnoted, often with a URL to a U.S. publication like Traffic Safety Facts (http://www.nhtsa.dot.gov/people/Crash/Index.html).   Fedstats http://www.fedstats.gov This free online index to U.S. government statistics on the web has an excellent list of statistical agencies and their major publications, as well as a subject index that links to agency web pages.   American Factfinder http://factfinder.census.gov/home/saff/main.html?_lang=en This is the access point for the decennial census and other censuses and surveys conducted by the U.S. Census Bureau.  It is useful for data back to 1990.
A Sampling of Specialized Sources	U.S. Serial Set Digital Edition UIUC Subscription http://www.library.uiuc.edu/orr/get.php?instid=395383 The Serial Set contains reports submitted to and generated by Congress from the 15th Congress (1817) to the present.  This online index contains full text for 1817-1937.  For an index to all Serial Set reports (without links to full text), use LexisNexis Congressional.  Most academic depository libraries have access to the Serial Set.   ERIC http://www.eric.ed.gov/ Use the thesaurus tab at the top of this page to find reports, articles and many other publications about educational issues.  Coverage of this database goes back to the 1960's, with a few earlier materials included.  Other interfaces to the same index are available from the UIUC Library's Online Research Resources page: do a title keyword search for "ERIC."    NTIS http://www.ntis.gov  The National Technical Information Service provides an index to technical reports published by a wide variety of government agencies which research engineering, military or scientific problems.  Many libraries have at least some of these reports, and NTIS is beginning to link to full text online.  This free index goes back to 1990; UIUC subscribes to an index that goes back to the 1960s, with a few earlier reports included (http://www.library.uiuc.edu/orr/get.php?instid=258201).