Ken Alder is a professor of history and Milton H. Wilson Professor of the Humanities at Northwestern University. He is the author of The Measure of All Things, published to worldwide acclaim in fourteen languages. He lives in Evanston, Illinois.

Brian Jennings is one of nation's top talk radio programmers who served as National V.P. of Talk Programming for Citadel Broadcasting, one of the nation's largest radio companies for over a decade and served as programming head to over 40 radio stations nationwide. According to Talker's Magazine, he is also one of the founding fathers of the conservative talk radio format. Nominated 5 times as a national talk radio executive of the year by Radio and Records Magazine, Jennings is also a national award-winning journalist. His many awards include Columbia University's DuPont Award, the National Sigma Delta Chi Award, the Ohio State Award, the National Headliners Award, the National Abe Lincoln Award, and others. He has also worked as a consultant to national personalites such as Oliver North, Michael Reagan, Alan Colmes, Dick Cavett, and others. Considered one of the foremost authorities on talk radio today, Jennings resides in the Pacific Northwest and is a frequent guest on radio and television programs throughout the nation and a staunch defender of free speech.