1.Smith Archive/ Alamy Stock Photo
2.© British Library Board. All Rights Reserved / Bridgeman Images
3.The Print Collector/Hulton Archive/Getty Images
4.North Wind Picture Archives/ Alamy Stock Photo
5.Courtesy of Science History Institute
6.DrMoschi, CC BY-SA 4.0, <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons https://commons.wikimedia.org/wiki/File:Lincoln_Cathedral_viewed_from_Lincoln_Castle.jpg
7.akg-images / Florilegius
8.akg-images / WHA / World History Archive
9.GRANGER
10.SSPL/Getty Images
11.Heritage Images / Historica Graphica Collection/akg-images
12.Library of Congress, Prints & Photographs Division, LC-DIG-ggbain-09513
13.Bridgeman Images
14.© Hulton-Deutsch Collection/CORBIS/Corbis via Getty Images
15.World History Archive/Alamy Stock Photo
16.From the Collections of The Henry Ford
17.Bettmann/Getty Images
18.AP/Bourdier
19.London Stereoscopic Company/Hulton Archive/Getty Images
20.Press Association via AP Images
21.IBM Computer, Hum Images/Alamy Stock Photo
22.Jan Woitas/picture-alliance/dpa/AP Images
23.Andrew Nicholson/Alamy Stock Photo
24.Bettmann/Getty Images
25.Photo 12/Alamy Stock Photo
26.Christoph Dernbach/picture-alliance/dpa/AP Images
27.Jeffrey Isaac Greenber 3+/Alamy Stock Photo
28.Facebook War Room, NOAH BERGER/AFP via Getty Images
29.Thorsten Wagner/Bloomberg via Getty Images
30.Qilai Shen/Bloomberg via Getty Images
31.akg-images / brandstaetter images/Votava
32.ASSOCIATED PRESS
33.Dgies, CC BY-SA 3.0, <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons; https://commons.wikimedia.org/wiki/File:Ted_Nelson_cropped.jpg
34.Benjamin Lowy/Contour by Getty Images
