Dr. Tom O'Grady will give his presentation "Not Since Tecumseh: Darkness at Midday over the Ohio Country; Total Eclipse of the Sun.” This presentation will focus on the Ohio 1806 eclipse and how Tecumseh, a Native American, used his knowledge of the eclipse to shake up the political dynamics in Ohio. Dr. O’Grady is an instructor of observational astronomy at Ohio University and has spent 25 years researching Ohio’s geography and settlement. This event is free to attend and begins at 11 a.m. at the Fort Laurens theater.