Who was President immediately before Herbert Hoover?

Who was First Lady during Calvin Coolidge's presidency? Grace Coolidge was married to which president? Which number president was Herbert Hoover? Who succeeded Herbert Hoover as President of the United States? Which political party did President Herbert Hoover belong to? Which president served from 1929 to 1933? In what year did Herbert Hoover first take office as President? In which state was Herbert Hoover born?