AVE6329963: Broadway in the 1900s with Immigrants and Settlers in the Streets of New York / Bridgeman Images

AVE6329964: Washing Drying in the Streets of New York in 1901 on the Day William McKinley was Assasinated / Bridgeman Images

AVE6329965: Men Carrying Coffin of President William McKinley / Bridgeman Images

AVE6329969: Inside Roosevelt House, Sagamore Hill, USA / Bridgeman Images

AVE6329975: President Roosevelt and his Horse / Bridgeman Images

AVE6329982: Men and Women Working on Factory Machines / Bridgeman Images

AVE6329992: Man Fixing Automobile / Bridgeman Images

AVE6329998: Father and Son Turn the Car Engine Ready for Family Outing / Bridgeman Images

AVE6329999: A Day Out in the Motor Car / Bridgeman Images

AVE6330006: Boy Scouts Meet President Roosevelt / Bridgeman Images

AVE6327594: Puerto Rico, 1960s: Sign on building "CENTRO DE SALUD" / Bridgeman Images

AVE6327595: United States, 1970s: man drills hole through rock / Bridgeman Images

AVE6327602: Puerto Rico, 1960s: Classroom, students seated in uniform / Bridgeman Images

AVE6327607: United States, 1930s: Members of the German Society of Space Travel converse / Bridgeman Images

AVE6327609: United States, 1930s: Two men set up an launch a missile that quickly falls to the ground / Bridgeman Images

AVE6327623: United States, 1930s: In a college, a scientist designs rocket parts / Bridgeman Images

AVE6327630: Germany, 1940s: German police and scientists discuss plans for army weapons / Bridgeman Images

AVE6327640: United States, 1950s: View of rocket launch / Bridgeman Images

AVE6327643: United States, 1950s: Animation of satellite released in space / Bridgeman Images

AVE6327656: United States, 1950s: Launch crew in control booth / Bridgeman Images

AVE6327658: United States, 1950s: Rocket launch steps typed on paper / Bridgeman Images

AVE6327667: United States, 1950s: Views of rocket being raised, positioned on launch pad / Bridgeman Images

AVE6327669: United States, 1950s: Long shot of Moscow / Bridgeman Images

AVE6327672: United States, 1950s: Woman in lab puts dog on scale / Bridgeman Images

AVE6327675: United States, 1950s: Cloud forming after a nuclear explosion / Bridgeman Images

AVE6327676: United States, 1950s: Drawing of a cloud forming after a nuclear explosion / Bridgeman Images

AVE6327677: Russia, 1950s: After experiencing weightlessness in space, two astronaut dogs return to earth / Bridgeman Images

AVE6327681: Russia, 1950s: Flocks of students wait to enter school / Bridgeman Images

AVE6327685: Russia, 1950s: Newspapers print about space travel / Bridgeman Images

AVE6327692: United States, 1950s: Animation of radioactive fallout from a cloud across the ground / Bridgeman Images

AVE6327695: Russia, 1950s: Tsiolkovsky's granddaughter talks to a crowd in his hometown of Kaluga / Bridgeman Images

AVE6327696: United States, 1950s: Diagram showing the spread of radioactive particles from a cloud across the land / Bridgeman Images

AVE6327706: United States, 1950s: Dr. Goddard establishes rocket history with the launching of his rocket / Bridgeman Images

AVE6327723: United States, 1950s: An ice skater falls as a group of men place a rocket into vertical position / Bridgeman Images

AVE6327726: United States, 1950s: The German Space Club members hold a meeting to discuss their future / Bridgeman Images

AVE6327738: United States, 1950s: A rocket is prepared to be launched at night / Bridgeman Images