what did spencer tracy die of?
From the Archives: Spencer Tracy, 67, Dies After Screen Career of 37 Years. Spencer Tracy, one of Hollywoodâs great actors, died here Saturday of a heart attack. He was 67. Mr. Tracy, whose rugged good looks and forceful manner were enjoyed by movie fans for 37 years, completed his last film only three weeks ago. In typical off-screen fashion, Mr. Tracy lived in semi-seclusion during his last weeks.