Mary Margaret Truman Daniel was an American classical soprano, actress, journalist, radio and television personality, writer, and New York socialite. She was the only child of President Harry S. Truman and First Lady Bess Truman. While her father was president during the years 1945 to 1953, Margaret regularly accompanied him on campaign trips, such as the 1948 countrywide whistle-stop campaign lasting several weeks. She also appeared at important White House and political events during those years, being a favorite with the media.

Harry S. Truman was the 33rd president of the United States, serving from 1945 to 1953. A member of the Democratic Party, he previously served as a United States senator from Missouri from 1935 to 1945 and briefly as the 34th vice president in 1945 under Franklin D. Roosevelt. Assuming the presidency after Roosevelt's death, Truman implemented the Marshall Plan in the wake of World War II to rebuild the economy of Western Europe and established both the Truman Doctrine and NATO to contain the expansion of Soviet communism. He proposed numerous liberal domestic reforms, but few were enacted by the conservative coalition that dominated the Congress.