A letter of apology signed by plaintiffs in the shooting of four students by National Guardsmen at Kent State University, an uncharacteristic early Thomas Moran landscape painting and a handsome set of desirable Herter Brothers furniture.

In the final hour of ANTIQUES ROADSHOW's Cleveland, Ohio, stop, host Dan Elias visits the Crawford Auto-Aviation Museum, which showcases an incredible array of antique, vintage, and classic automobiles and aircraft. Appraisers uncover more unique finds at the Cleveland Convention Center, including a letter of apology signed by plaintiffs in the shooting of four students by National Guardsmen at Kent State University, an uncharacteristic early Thomas Moran landscape painting and a handsome set of desirable Herter Brothers furniture valued between $100,000 and $150,000.