History Resource Center: U.S. provides integrated access to over 4,000 historical (primary) documents, articles from more than 30 reference titles, and over 110 full-text journals covering themes, events, individuals and periods in U.S. history from pre-Colonial times to the present.
The material also includes citations from over 180 additional history journals from the Institute for Scientific Information's Arts and Humanities Citation Index, as well as the entire "American Journey Online" series.