The Oswego County Historical Society will host the first lecture of the 2015 season on Sunday, April 26 at 1:30 pm at the Richardson-Bates House Museum located at 135 E. Third St., Oswego. The event is free and open to the public. Guest lecturer Rick Sivers will present a program entitled, “With Pen and Sword.” The presentation will also mark the opening of a new exhibit at the museum that recalls the death of President Abraham Lincoln and the end of the American Civil War.