U.S. Army General David Petraeus became director of the CIA in 2011. He resigned from the post in 2012, after his extramarital affair with Paula Broadwell was publicized.

Author Paula Broadwell made headlines in 2012, when her extramarital affair with U.S. General David Petraeus was uncovered.

Jill Kelley sought help from the FBI in 2012 after receiving threatening emails, triggering an investigation that exposed the affair between General David Petraeus and biographer Paula Broadwell.

Russian author Leo Tolstoy wrote the acclaimed novels War and Peace, Anna Karenina and The Death of Ivan Ilyich, and still ranks among the world's top writers.

A New York governor who became the 26th U.S. president, Theodore Roosevelt is remembered for his foreign policy, corporate reforms and ecological preservation.

Jackie Robinson became the first African-American to play major league baseball, becoming Rookie of the Year in 1947, National League MVP in 1949 and a World Series champ in 1955.

Abraham Lincoln was the 16th president of the United States. He preserved the Union during the U.S. Civil War and brought about the emancipation of slaves.

Doris Kearns Goodwin is best known for authoring biographies of American presidents, including Lyndon B. Johnson, John F. Kennedy, Franklin D. Roosevelt and Abraham Lincoln.