Which three presidents served during the 1920's?

The three U.S. Presidents to serve during the 1920s were:

#28 - Woodrow Wilson: http://www.whitehouse.gov/about/presidents/woodrowwilson

#29 - Warren G. Harding: http://www.whitehouse.gov/about/presidents/warrenharding

#30 - Calvin Coolidge: http://www.whitehouse.gov/about/presidents/calvincoolidge