General Reference

Explore more than 650 pre-made timelines with over 14,000 individual events, or create your own timelines. 

Ohio has been home for people for at least 15,000 years. This database is designed to help users identify flint artifacts.

Ohio tree identification guide; search and find information on trees in Ohio by identifying the leaf, fruit, or name.

Ohio snake identification guide; this database includes information on 30 species and subspecies of snakes located in Ohio.

Browse from a huge range of subjects to get a quick authoritative and accessible overview of a topic and gain new insights. 

Read full-text essays that present multiple sides of today’s most controversial scientific, social, economic, and political issues.

Reference content in humanities, social sciences, and science. Access long-form overview articles written, peer-reviewed, and edited by leading scholars.

Search thousands of magazines, academic journals, newspapers, reference books, photos and maps on millions of topics.