The Historical Research Index (HRI)
An index to primary and secondary source reference books on American and world history which provides in depth coverage of political, military and diplomatic history from the U.S., Europe, Asia, the Far East, Southern Africa, and Central & South America. Every effort is made to include important areas of coverage often neglected in other electronic history databases such as social, economic, legal religious, and science & technology history. HRI has extensive coverage of the era between the Spanish American War and the end of WW II, especially with regard to the the Far East (Southeast Asia, China, Japan, Australia and Oceania). Focused coverage is also available for various states of the United States with additional resources in progress. Mexico and the Caribbean are given special attention.

HRI is Unique
HRI is not a bundle of electronic books. HRI is a sophisticated research tool functioning in a true database format. Nearly 720,000 individually indexed entries -- standardized subject headings assigned by our staff -- provide page-level access to more than 500 carefully selected books with a focus on university reading lists assigned for classroom instruction. Do you need to search for a topic but limit the results to the name of a person, an event, geographic place name, naval vessel or military exercise during a specified range of years -- and not get all of the above? Retrieve precise results with HRI.