William Perry `` Bill '' Clements , Jr. ( April 13 , 1917 - May 29 , 2011 ) , was the 42nd and 44th governor of Texas , serving from 1979 to 1983 and again from 1987 to 1991 .
William Perry `` Bill '' Clements , Jr. ( April 13 , 1917 - May 29 , 2011 ) was the 42nd and 44th Governor of Texas , serving from 1979 to 1983 and 1987 to 1991 .