He served as the tenth Prime Minister of Canada from December 29 , 1921 , to June 28 , 1926 ; from September 25 , 1926 , to August 7 , 1930 ; and from October 23 , 1935 , to November 15 , 1948 .
He served as the tenth Prime Minister of Canada from December 29 , 1921 to June 28 , 1926 ; from September 25 , 1926 to August 7 , 1930 ; and from October 23 , 1935 to November 15 , 1948 .