From 1953 -- 1957 he was associate director of the American Political Science Association in Washington , DC .
Next Hechler was a White House assistant to Harry S. Truman from 1949 to 1953 and Research Director for Adlai Stevenson 's 1956 Presidential campaign .
From 1953 -- 1957 Hechler was associate assistant of the American Political Science Association in Washington , DC .
Next Hechler was a White House assistant to Harry S. Truman from 1949 to 1953 and Research Director for Adlai Stevenson 's 1956 Presidential campaign .