Some presidents did not use a Bible to take the oath of office, including Theodore Roosevelt, who did not use anything when he was sworn into office in 1901, and John Quincy Adams, who chose a legal book for his 1825 swearing-in, to signify his responsibility to uphold the U.S. constitutional law.

From historic Bibles to the leading role of the country's chief justice, Inauguration Day has been filled with traditions. Which ones have endured?