b'\n_START_ARTICLE_\nDon Keefer\n_START_PARAGRAPH_\nDonald H. "Don" Keefer (18. august 1916 Highspire, Pennsylvania \xe2\x80\x93 7. september 2014 Los Angeles, California) oli Ameerika \xc3\x9chendriikide n\xc3\xa4itleja.'