Known affectionately as the “Prexies,” the 1938 Presidential series is a favorite among stamp collectors. The $1 denomination pictures Woodrow Wilson. Although well known for serving as president of Princeton University and governor of New Jersey, Woodrow Wilson gained worldwide recognition as our 28th President. After successfully guiding the U.S. through World War I, he led the peace conference in Paris that resulted in the Treaty of Versailles. The treaty, which was based on Wilson's famous "Fourteen Points" speech, brought a peaceful end to the war. Throughout Europe, crowds cheered him as the champion of peace and democracy.