For one hundred years, the Ohio Biological Survey (OBS) has published books, circulars, posters, and multi-issue volumes on the biota of Ohio and the region of which Ohio is part. A more recent peer-reviewed journal and a quarterly newsletter are also available. Publications can be found by following the links below. Many publications are now available for purchase online. Other publications may be purchased through the Survey office. The recently updated Notes series (the online, peer-reviewed journal of the Survey) is now available for free download. Individual papers are posted periodically as they successfully complete the peer-review and editing process.