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.
After graduating from George Washington University in 1946, she embarked on a career as a coloratura soprano, beginning with a concert appearance with the Detroit Symphony Orchestra in 1947. She appeared in concerts with orchestras throughout the United States and in recitals throughout the U.S. through 1956. She made recordings for RCA Victor, and made television appearances on programs like What's My Line? and The Bell Telephone Hour.
In 1957, Truman abandoned her singing career to pursue a career as a journalist and radio personality, when she became the co-host of the program Weekday with Mike Wallace.