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http://www.ex.ac.uk/BABBAGE/biograph.html contains a biography of Charles Babbage and A Early Calculation Machines: Charles Babbage Mid 1800 Charles Babbage: Difference Engine and Analytical Engine (1791-1851) Ada Lovelace: The World's first Programmer (1815-1851). George Washington: A venerated Icon of the new American world (1780 -1820) Sojourner Truth: Abolition for slavery and equal rights for women (1797-1883) 1836: Industrial Revolution changed forever the lives of most Americans, enabled ordinary people to purchase mass-produced goods. 1829: The first steam-powered Locomotive in America. 1837: The Lone Star Republic of Texas becomes part of United States. 1826: The first America Railroad completed in Quincy Massachusetts. 1815: The Library of Congress is established. Please also indicate whether you have received permission yet for each graphic. http://www.computer-museum.org/groups/Slide/036.html Image of Charles Babbage, Courtesy of Computer Museum of America. http://www.computer-museum.org/groups/Slide/042.html Analytical Engine III, Courtesy of Computer Museum of America. http://www.computer-museum.org/groups/Slide/038.html Babbage Difference Engine, Courtesy of Computer Museum of America. Ceiling: http://www.christusrex.org/www1/stanzas/Sul-ceiling.jpg Carpet/Floor: www.yourcarpersource.com/wood.htm The light bulb: www.architecturallightingcanada.com/ceiling.html Chair/table: www.antique-art.com.au/gallery/items/1944.htm http://www.memorialhall.mass.edu/turns/index.jsp The images of George Washington, Sojourner Truth and The women sowing: Mba