Sound Ideas Podcast Text: Illinois State University scholar Katherine Ellison says the history of codes, and ciphers is about more than spies. Ellison talks with Charlie Schlenker about her new book on the the history of cryptography. Hear about an important McLean County legal case that helped shape Illinois. It's a bicentennial interview with ISU political scientist Bob Bradley. And get to know the opening musician at the GLT Summer Concert. Based on some good advice from a long time music professional, Dan Hubbard is now focusing on more story telling in his music.