All Databases: O

A union catalog of digital resources, providing access to digital resources of 1,000+ providers by "harvesting" their descriptive metadata (records) using OAI-PMH (the Open Archives Initiative Protocol for Metadata Harvesting).

Use to locate archival materials and primary sources across institutions in Ohio. showcase the rich collections housed in archives, libraries, and other institutions throughout the state of Ohio. The Repository provides access to collections on a broad scale, increasing the visibility of these unique and valuable resources for research.

A combined catalog of over 7.8 million books and other library materials from many of Ohio's universities, colleges, community colleges, and the State Library of Ohio.

An online resource that includes articles from academic journals, newspapers, magazines; audio; videos; opinion essays; and primary sources on current controversial issues. A good source of topic ideas for papers and speeches.

Reference works focusing on the lives and events that have shaped African American and African history and culture.

The accepted authority on the evolution of the English language over the last millennium. It is a guide to the meaning, history, and pronunciation of over half a million words, both present and past.