The Minnesota Valley Civil War Round Table will welcome Dr. William E. Lass for a presentation on the Sibley Expedition of 1863 on May 21 at 6:30 p.m. at New Ulm Public Library. Lass, Professor Emeritus of History at Minnesota State, Mankato, will discuss the expedition, in which General Henry H. Sibley led U.S. troops from Minnesota across Dakota Territory, pursuing bands of Dakota Indians, some of whom the military believed had participated in the U.S.-Dakota War of 1862. The Brown County Historical Society is a partner on this project. Call 507-359-8334 for more information.