George Washington - First president, served from April 30, 1789, to March 4, 1797.

John Adams - Second president, served from March 4, 1797, to March 4, 1801.

Thomas Jefferson - Third president, served from March 4, 1801, to March 4, 1809.

James Madison - Fourth president, served from March 4, 1809, to March 4, 1817.