TOUGH to acquire vintage 7x9-inch black and white portrait as Hoss Cartwright , boldly signed and inscribed in blue ballpoint pen in the late 1950s. In good condition. Before his death of a pulmonary embolism at the age of 43, 6'4", 300-pound gentle giant Dan Blocker brought warmth and empathy to the role of Hoss Cartwright on T.V.'s "Bonanza" (1959-1973) across a remarkable 13 seasons.