Terry Gross

Guitarist Link Wray. He's credited with inventing the "power chord" in the 1950s. His first big recording hit was "Rumble" an instrumental piece that he wrote. When he went to record it in the studio he wasn't happy with the sound on the amp, so he pierced holes in the speaker cone to create additional distortion. Later guitarists like Pete Townshend and John Lennon were influenced by his work. Wray's other hits include "Rawhide" and the Batman Theme. Rhino records released "Rumble: the Best of Link Wray" in 1993.

Mystery writer Donald Westlake has written 70 novels and screenplays (including "The Grifters" and "The Stepfather"). He is known for his novels which combine laughs with thrills, and which show equally incompetent criminals and law enforcement. His recurring characters include a bungling burglar named John Dortmunder, and a gun-for-hire named Parker. Westlake has also written novels that parody the world of publishing and supermarket tabloids. His latest novel is a crime novel about downsizing, "The Ax" (Mysterious Press/Warner Books)

Eric Foner is the DeWitt Clinton Professor of History at Columbia University. He has published numerous works on the American Reconstruction after the civil war, a period whose problems with promoting racial and economic justice in a diverse country remain relevant to America today.