Mahoning Valley Historical Society will debut “Cheers to Your Health!” in its monthly Bites and Bits of History video presentation at noon on Thursday, December 17. Cassie Nespor, curator at YSU Melnick Medical Museum, will explore the medical ties to contemporary cocktails during this season of holiday celebrations. Ms. Nespor started working at the Youngstown State University Archives in January 2009. She has a Masters degree in Library Science with a focus in Archival Studies from the University of Pittsburgh…