These are selected U.S. government websites. Some include historic primary source information plus current information on topics like terrorism and domestic security.
OneSearch, on the University Libraries' homepage, provides access to a wealth of government documents. Type relevant search terms in the OneSearch box, and click the red button to run the search.
On the left side of the search results page, use the "Content Type" filter to limit results to government documents. Check the box for "Government Document" or, if it does not appear among the top four or five options in the filter, type "government document" in the text box above the filter, then check the box.
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Many of the search results will be available online, and are marked with a "Full Text Online" button. Those unavailable online will have the location information.