Research Databases: O

Database containing death certificates of persons that died in Ohio from 1913-1937.

Ohio History Central is an evolving, dynamic online encyclopedia that includes information about Ohio's natural history, prehistory, and history. Ohio History Central is perfect for anyone wanting to learn more about Ohio! Ohio History Central was researched and written by staff at the Ohio History Connection.

Project to bring together digital versions of historical collections from more than 330 archives, historical societies, libraries, and museums. Search or browse more than 26,000 primary sources dating from prehistory to the present. Take the Ohio Memory Challenge. Read essays about Ohio topics. Create your own scrapbook.

Find government services and information for residents, businesses, visitors, and state employees. Reach the website of any Ohio government agency.

Online database of publications from Ohio State University Extension Office; the College of Food, Agricultural, and Environmental Sciences; The Ohio Agricultural Research and Development Center; and the Agricultural Technical Institute. Find hundreds of factsheets, bulletins, and other educational materials covering a wide array of subjects - such as agriculture, natural resources, family and consumer sciences, community development, 4-H, and youth.

The Oxford Research Encyclopedias offer long-form overview articles written, peer-reviewed, and edited by leading scholars. Each of the twenty-five distinct encyclopedias cover both foundational and cutting-edge topics in order to develop, over time, an anchoring knowledge base for major areas of research across the humanities, social sciences, and sciences. Oxford Classical Dictionary and  Encyclopedia of Social Work are two of those encyclopedias.