GCL3411759: SIEGE OF ACRE, 1799 British Commodore Sidney Smith at the Siege of Acre, 1799. Engraving. / Bridgeman Images

GCL3411764: FLORIDA: RAILROAD, 1912 Henry Morrison Flagler and his party exiting the first train of the Florida Overseas Railroad to arrive at Key West, Florida. Photograph, 1912. / Bridgeman Images

GCL3411766: FLORIDA: WHITEHALL, c.1902 Whitehall, the residence of Henry Flagler in Palm Beach, Florida. Photograph by William Henry Jackson, c.1902. / Bridgeman Images

GCL3411767: FLORIDA: WHITEHALL, c.1910 Whitehall, the residence of Henry Flagler in Palm Beach, Florida. Photograph, c.1910 / Bridgeman Images

GCL3411773: PONCE DE LEÓN HOTEL, c.1902 The Ponce De Leon Hotel in St. Augustine, Florida. Photograph by William Henry Jackson, c.1902. / Bridgeman Images

GCL3411777: ROYAL POINCIANA HOTEL, c.1902 The Royal Poinciana Hotel in Palm Beach, Florida. Photograph by William Henry Jackson, c.1902. / Bridgeman Images

GCL3410381: COOPER TYPEWRITER, 1856 Circular typewriter invented by John Cooper, 1856. / Bridgeman Images

GCL3410389: HARRIET BEECHER STOWE (1811-1896). American abolitionist and writer. Photograph, c.1860. / Bridgeman Images

GCL3410393: ENGLAND: ICE DAMAGE, 1974 Mr. and Mrs. Wildsmith examine damage caused by a massive block of ice that had fallen from the sky in Pinner, Middlesex, England, on 25 March 1974. / Bridgeman Images

GCL3410394: BRAZIL: UFO, 1969 An unidentified flying object allegedly photographed by Jose Ireneu Martinez Carrasco in Areal in central Brazil, May 1969. / Bridgeman Images

GCL3410397: WWII: ORMOC BAY, 1944 American ships and landing vehicles en route for the beach at Ormoc Bay, Leyte in the Philippines. Photograph, 7 December 1944. / Bridgeman Images

GCL3410400: CALIFORNIA: UFO, 1956 A flying saucer allegedly photographed by a 15-year-old in San Bernadino, California, July 1956. / Bridgeman Images

GCL3410404: WWII: USS RENO, 1944 Aerial view of the USS Reno after being torpedoed, photographed alongside the USS Zuni, 5 November 1944. / Bridgeman Images

GCL3410427: OCCUPY WALL STREET, 2011 A protester at the Occupy Wall Street encampment in Zuccotti Park, New York City, wearing a Guy Fawkes mask, made popular by the graphic novel 'V for Vendetta,' and which has become associated with various anti-establishment activists. Photograph, October 2011. / Bridgeman Images

GCL3410429: OCCUPY WALL STREET, 2011 Crowd of protesters near the library facility at the Occupy Wall Street protest in Zuccotti Park in downtown New York City. Photograph, October 2011. / Bridgeman Images

GCL3410430: OCCUPY WALL STREET, 2011 Sign for a workshop on non-violent communication at the Occupy Wall Street demonstration in Zuccotti Park, downtown New York City. Photograph, October 2011. / Bridgeman Images

GCL3410432: OCCUPY WALL STREET, 2011 Protesters with signs at the Occupy Wall Street demonstration in Zuccotti Park, downtown New York City. Photograph, October 2011. / Bridgeman Images

GCL3410435: OCCUPY WALL STREET, 2011 Sign at the Occupy Wall Street demonstration in Zuccotti Park, downtown Manhattan, featuring a quote by Franklin D. Roosevelt. / Bridgeman Images

GCL3410453: OCCUPY WALL STREET, 2011 A protester at the Occupy Wall Street encampment in Zuccotti Park, New York City. Photograph, October 2011. / Bridgeman Images

GCL3410461: OCCUPY WALL STREET, 2011 A protester's sign at the Occupy Wall Street encampment in Zuccotti Park, New York City. Photograph, October 2011. / Bridgeman Images

GCL3410474: OCCUPY WALL STREET, 2011 Protesters at the Occupy Wall Street encampment in Zuccotti Park in New York City. Photograph, October 2011. / Bridgeman Images

GCL3410485: OCCUPY WALL STREET, 2011 A protester's sign at the Occupy Wall Street encampment in Zuccotti Park, New York City. Photograph, October 2011. / Bridgeman Images

GCL3410490: OCCUPY WALL STREET, 2011 A protester's sign at the Occupy Wall Street encampment in Zuccotti Park, New York City. Photograph, October 2011. / Bridgeman Images

GCL3410500: OCCUPY WALL STREET, 2011 A protester wrapped in a sign at the Occupy Wall Street encampment in Zuccotti Park, New York City. Photograph, October 2011. / Bridgeman Images

GCL3410504: OCCUPY WALL STREET, 2011 A sign at a health care protest, part of the Occupy Wall Street movement in New York City. Photograph, October 2011. / Bridgeman Images

GCL3410506: OCCUPY WALL STREET, 2011 A protester outside of the former St. Vincent's Hospital in New York City, as part of the Occupy Wall Street protests. Photograph, 26 October 2011. / Bridgeman Images

GCL3410509: OCCUPY WALL STREET, 2011 Protesters outside of the former St. Vincent's Hospital in New York City, as part of the Occupy Wall Street protests. Photograph, 26 October 2011. / Bridgeman Images

GCL3410513: OCCUPY WALL STREET, 2011 Protesters outside of the former St. Vincent's Hospital in New York City, as part of the Occupy Wall Street protests. Photograph, 26 October 2011. / Bridgeman Images

GCL3410516: OCCUPY WALL STREET, 2011 Protesters outside of the former St. Vincent's Hospital in New York City, as part of the Occupy Wall Street protests. Photograph, 26 October 2011. / Bridgeman Images

GCL3410517: OCCUPY WALL STREET, 2011 Protesters outside of the former St. Vincent's Hospital in New York City, as part of the Occupy Wall Street protests. Photograph, 26 October 2011. / Bridgeman Images

GCL3410518: OCCUPY WALL STREET, 2011 Protesters outside of the former St. Vincent's Hospital in New York City, as part of the Occupy Wall Street protests. Photograph, 26 October 2011. / Bridgeman Images

GCL3410523: MOROCCO: DAYCARE, 1967 Schoolboys showing their arithmetic at a daycare center in Fez, Morocco, for children of working parents. Photograph, 1967. / Bridgeman Images

GCL3410526: VETERANS ADMINISTRATION Veterans Administration poster encouraging veterans to use their G.I. Bill, 1978. / Bridgeman Images

GCL3410531: MAP: RAILWAY, 1874 A map of the Chicago, Milwaukee, and St. Paul railways, with illustrations. Map by Rand McNally & Co., 1874. / Bridgeman Images

GCL3410532: MAP: WORLD'S FAIR, 1893 Souvenir map of the World's Columbian Exposition at Jackson Park and Midway Plaisance in Chicago, Illinois. Map published by A. Zeese & Co., 1893. / Bridgeman Images

GCL3410533: MAP: CHICAGO TRAINS, c.1897 A map showing the elevated train lines of the Chicago, Rock Island and Pacific Railroad in Chicago, Illinois. Map published by Poole Bros., c.1897. / Bridgeman Images