On this week’s 51%, we meet with the head of the National Archives amid her tour of presidential libraries across the U.S. Dr. Colleen Shogan discusses the role historical records can play in healing the country’s cultural and political divides. We also stop by an event with Supreme Court Justice Sonia Sotomayor, and learn about an artificial intelligence project at RPI telling the story of Emily Warren Roebling, a 19th Century engineer who helped complete the Brooklyn Bridge.  Guests: Dr. Colleen Shogan, 11th archivist of the United States; Antoinette Maniatty, professor and head of the Department of Mechanical, Aerospace, and Nuclear Engineering at Rensselaer Polytechnic Institute 51% is a national production of WAMC Northeast Public Radio. Jesse King is our producer and host. Our associate producer is Jody Cowan, and our theme is "Lolita" by the Albany-based artist Girl Blue.