Research Databases: O

An evolving, dynamic online encyclopedia that includes information about Ohio's natural history, prehistory and history. Each section contains written information, maps, timelines, and images.

This website provides access to numerous Ohio history resources.

A digital collection of Ohio historical artifacts.

Index of 2,850,000 obituaries, death & marriage notices, and other Ohio sources, from 1810s to present.
^{Actual obits may be ordered from over 60 partner libraries; only Hayes Library has online ordering.}