A circa 1770 Chippendale desk; a 1920s Gibson mandolin with silver and abalone inlay; and a rare daguerreotype of Edgar Allan Poe.

ANTIQUES ROADSHOW's final hour in Omaha, Nebraska finds host Lara Spencer and expert Richard Wright paying homage to America's Corn Belt by savoring some sweet summer corn and some equally sweet corn-themed collectibles. Meanwhile, appraisers at the Qwest Center Omaha are treated to a smorgasbord of mouthwatering finds including a circa 1770 Chippendale desk complete with Civil War-era documentation; a 1920s Gibson mandolin with outstanding condition silver and abalone inlay; and an incredibly rare daguerreotype of the mysterious Edgar Allan Poe, worth $30,000 to $50,000.