The Gerald R. Ford Presidential Library and Museum showcases a pistol that was used by a member of a notorious cult in a twisted attempt to assassinate the president. The Rhinelander Logging Museum displays the stuffed skin of a beast believed to have preyed on people in the woods of Wisconsin. And at the New York County Clerk's Office, a file stored deep in the archives tells of an infamous woman at the center of an epidemic that sent panic through the streets of New York City.For even more Mysteries at the Museum, head to discovery+. Go to discoveryplus.com/mystery to start your 7-day free trial today. Terms apply.