EVB2924051: Chicago's Grant Park is littered with the debris. The hippies and yippies who battled police and national guardsmen for four days during the Democratic National Convention have left for home or are in Chicago's jail. Aug. 30, 1968 / Bridgeman Images

EVB2924093: Helio-Gyro-Copter invented by Jesse D. Langdon. The propeller and its wide circular rim act both as a gyroscope and a rotor. It weighed 1659 pounds and had a 625-horsepower motor. Nov. 12, 1930 / Bridgeman Images

EVB2924099: The 1956 Hungarian Uprising. Hungarian rebels destroy a Soviet bookstore in Budapest. Oct. 23-Nov 4, 1956 / Bridgeman Images

EVB2924141: Daytona Beach is 23-mile-long and 600 feet wide. It's smooth, compacted sand is great for cars and vehicles of all types. July 5, 1957 / Bridgeman Images

EVB2922690: Elliott Roosevelt, testifies at FCC hearing, 1939 / Bridgeman Images

EVB2922705: President Franklin Roosevelt caught in a rain storm while campaigning in Charlotte, NC on Sept. 11, 1936 / Bridgeman Images

EVB2922717: Former President Harry S. Truman on his front porch in Independence, Missouri. Nov. 11, 1967 / Bridgeman Images

EVB2922726: Margaret Truman, the President's daughter, with actress Tallulah Bankhead (2nd from left), and singer, Lucienne Boyer (center), Sept. 1951 / Bridgeman Images

EVB2922732: Future President Harry Truman as an infantryman in World War I. c. 1917, Unknown photographer, (20th century) / Bridgeman Images

EVB2922738: Harry Truman baby picture. He was born on May 8, 1884 / Bridgeman Images

EVB2922756: Former President Harry Truman at the Democratic National Convention, Aug. 16, 1956 / Bridgeman Images

EVB2922771: President Eisenhower at a Press Conference at the Executive Office Building. Jan. 13, 1954 / Bridgeman Images

EVB2922789: Pro-Eisenhower demonstrators with posters on household brooms, Sept. 8, 1952 / Bridgeman Images

EVB2922795: Allied Nations War Strategy Conference in Casablanca, French Morocco, Jan. 31, 1943 / Bridgeman Images

EVB2922813: Dwight Eisenhower's second inauguration. Pennsylvania Avenue as President Eisenhower's motorcade drives from the Capitol to the White House. Jan. 21, 1957 / Bridgeman Images

EVB2922816: President Eisenhower and John Foster Dulles at the White House, Dec. 11, 1957 / Bridgeman Images

EVB2922822: President Eisenhower poses with his second term Cabinet, May 10, 1957 / Bridgeman Images

EVB2922828: The Atlantic Conference, Franklin Roosevelt & Churchill with their chief advisors aboard H.M.S. Prince of Wales, Aug. 12, 1941 / Bridgeman Images

EVB2922873: The 1948 Progressive Party Presidential candidate Henry Wallace speaking to a large audience in Des Moines, Iowa. August 30, 1948 / Bridgeman Images

EVB2922888: 1968 Presidential third party hopefuls / Bridgeman Images

EVB2922903: Republicans at a Los Angeles Rams and the Minnesota Vikings game, 1969 / Bridgeman Images

EVB2922909: Vice President Spiro Agnew golfing at Palms Springs, California, Feb. 7, 1970 / Bridgeman Images

EVB2922951: President Franklin Roosevelt surrounded by saluting Honor Scouts, marking the 27th anniversary of the founding of the Boy Scouts on Feb. 8, 1937 / Bridgeman Images

EVB2922972: President Franklin Roosevelt and Vice President John Nance Garner at the White House. June 12, 1936 / Bridgeman Images

EVB2922975: Dec. 21, 1933. Franklin Roosevelt with his Cabinet. At head of table is FDR seated at his desk in the White House, Dec. 21, 1933 / Bridgeman Images

EVB2922978: President Franklin Roosevelt, debonair with his cigarette holder. 1939 / Bridgeman Images

EVB2922981: President Franklin Roosevelt inspects the new Union Pacific Streamliners, Feb. 19, 1934 / Bridgeman Images

EVB2924207: President John Kennedy with Cuban leaders of the failed Bay of Pigs Invasion, 1962 / Bridgeman Images

EVB2924225: Communist Leaders who were on trial in 1949 / Bridgeman Images

EVB2924240: Coconut Grove Nightclub Fire. Charred tables and chairs, broken glass and other debris in the fire-ruined interior of the Coconut Grove nightclub. 492 were killed and 214 injured on Nov. 28, 1942 / Bridgeman Images

EVB2924270: German refugees fleeing Cologne as the U.S. First Army moves toward the city. The walking civilians were pushing bicycles, carts with their belongings, or with only the clothes on their backs. March 10, 1945 / Bridgeman Images

EVB2924318: Hollywood child actors on a school holiday at the Venice Pier. Having a barrel of fun are (from nearest camera) Judy Garland who is down, Mickey Rooney, going down, Freddy Bartholomew, on his stomach, and John Arlington, doing the crawl. May 28, 1937 / Bridgeman Images

EVB2924339: New York Bonus Marchers leave for to Washington. June 4, 1932 / Bridgeman Images

EVB2924354: Bonus Army Veterans from Chattanooga, parade past White House in a truck. May 18, 1932 / Bridgeman Images

EVB2924393: Louis B. Mayer (right) and Irving Thalberg, during Hollywood's 1920s and 1930s. Thalberg was called 'The Boy Wonder' for making very profitable films, including GRAND HOTEL, CHINA SEA, CAMILLE, MUTINY ON THE BOUNTY and THE GOOD EARTH. His career was cut short by his death from pneumonia in 1936. / Bridgeman Images

EVB2924396: President Lazaro Cardenas annual message to the General Congress session. Sept. 3, 1938. One important issue was agrarian reform, the redistribution of land from large commercial haciendas to peasants collectives, or ejidos. Sept. 3, 1938. - / Bridgeman Images