Books can be secondary sources written by scholars and researchers about historical topics. There may also be books that are published compilations of primary sources -- documents, letters, journals, etc. Some books may be primary sources if they were written in the time period that your project is examining. WorldCat or UW Libraries Search (beta) -- see box above -- will help you locate all of these resources. See the search box below for suggestions for terms to locate primary resources in UW Libraries search.