William R. Tolbert Jr. died on April 12, 1950.
William Richard Tolbert Jr. -LRB- May 13 , 1913 -- April 12 , 1980 -RRB- was the 20th President of Liberia from 1971 until 1980 , when he was killed in a coup d'tat led by Samuel Doe .	20th	President of Liberia#List of Presidents of Liberia	Samuel Doe	Samuel Doe	Liberia	Liberia	20th President	President of Liberia#List of Presidents of Liberia	coup d'tat	coup d'tat
