"Evidence of Slavery in the Hudson Valley” at Thacher Nature Center. Slavery has long been associated with the south, but recent discoveries in the Hudson Valley tell another story. Historical archaeologists at the New York State Museum have recently completed geophysical surveys and archaeological testing at Schuyler Flatts, the Nicoll-Sill House, and Van Schaick Mansion in Albany County. Dr. Michael Lucas will discuss ongoing research into these sites and the findings that give evidence of the practice of slavery. Call 872-0800 for more information.