Purdue Libraries has numerous resources on Indiana History. Using the Purdue Libraries online catalog to do subject searches is a useful way to find books on Indiana historical topics. Examples include:
The database America: History and Life indexes articles from U.S. History journals. The Indiana Magazine of History
is the official scholarly journal of Indiana History. Traces of Indiana and Midwestern History is a popular history periodical which is also published by the Indiana Historical Society.
Indiana History Online (Digital archive documenting various aspects of Indiana History)