The History Detectives Explore Lincoln's Letter, Parker's Sax, and Mark Twain's Watch

Explore the secrets of America's past with the official companion to PBS's History Detectives Could a Civil War POW have fashioned a working camera from a tin can, a spyglass lens, and a pine plank? What can an ancient and battered banjo reveal about America's musical and segregated past? How could a man save his own life by proving that he had forged a painting? These are just a few of the intriguing and puzzling questions posed to super sleuths Wes Cowan, Elyse Luray, Gwendolyn Wright, and Tuk