Hubert Horatio Humphrey Jr. ( May 27 , 1911January 13 , 1978 ) was an American politician who served as the 38th Vice President of the United States under President Lyndon Baines Johnson , from 1965 to 1969 .
Hubert Horatio Humphrey , Jr. ( May 27 , 1911 -- January 13 , 1978 ) was an American politician . He was the thirty-eighth Vice President of the United States from 1965 to 1969 , under Lyndon B. Johnson .