Paul Robeson, holding a white hat, leads civil rights activists down Pennsylvania Avenue in front of the White House on Aug. 5, 1948. Robeson, co-chairman of the Progressive Party, overcame discrimination to become a well-known singer, actor, lawyer and athlete. (John Rous / Associated Press)
Jimmy Carter, holding the hand of his daughter, Amy, waves to the crowd as he walks the parade route, from the Capitol to the White House, on Jan. 20, 1977. (Suzanne Vlamis / Associated Press)
Members of the U.S. Marine Corps march down Pennsylvania Avenue after the inauguration of George W. Bush in 2001. (Shawn Thew / AFP)
A motorcade escorts the hearse carrying the body of President Ford down Pennsylvania Avenue from the U.S. Capitol to the National Cathedral. (Mark Boster / Los Angeles Times)
Headlights create a work of art in this nighttime scene from Pennsylvania Avenue near the Capitol building. (Michael Gottschalk / AFP/Getty Images)
