A gazetteer of periods for linking and visualizing data.

Download the periods.


Browse and edit periods.

PeriodO client

What is this?

PeriodO is a public domain gazetteer of scholarly definitions of historical, art-historical, and archaeological periods. It eases the task of linking among datasets that define periods differently. It also helps scholars and students see where period definitions overlap or diverge.

Who are you?

The PeriodO project is led by Adam Rabinowitz (University of Texas at Austin) and Ryan Shaw (University of North Carolina at Chapel Hill). Patrick Golden is the lead developer of the PeriodO software. The PeriodO dataset has been developed largely by our generous contributors. Our work has been funded by a Digital Humanities Start-Up Grant from the Office of Digital Humanities at the National Endowment for the Humanities, and a National Digital Platform grant from the Institute of Museum and Library Services.

Tell me more.

Start by looking at the guide to using PeriodO.

You may also be interested in reading about the motivation for the project or getting a technical overview. Further information can be found in our publications. Or contact us and ask whatever you want!