Use the Kent Library Catalog to find books.
Some appropriate subject headings include:
African-Americans--History
History
Indians of North America--History
Missouri--History
United States--History
Women--History
Please keep in mind that you have access to MOBIUS, which provides access to millions of books from around the state within 3-5 business days.
Browse the shelves by call number. Use the Dewey Decimal chart to get you in the right subject areas or try the following:
History of North American -- 970s
United States History -- 973.312
Cambridge Histories Online provides access to e-books on history.