Otsego County Times: 1
Necrology files, Bentley Historical Library, University of Michigan: 2
US Patent and Trademark Office, Patent No 407,130: 3
College of Engineering Records, Bentley Historical Library, University of Michigan: 4
Detroit Publishing Company Photograph Collection: 5
Shannon family: 6, 9, 18, 23, 24, 25, 27, 29, 33, 34, 36, 42, 43, 44, 45
Roger W/Flickr: 7
The World’s Work (1902): 8
Computer Laboratory, University of Cambridge. Reproduced by permission: 10
Courtesy MIT Museum: 11, 22, 31, 32, 35, 37, 38, 40
Courtesy of Harry H. Laughlin Papers, Special Collections Department, Pickler Memorial Library, Truman State University: 12
Photographer unknown. From the Shelby White and Leon Levy Archives Center, Institute for Advanced Study, Princeton, NJ, USA: 13
Nokia Bell Labs: 15, 16, 21, 26
NASA: 17
Courtesy of the Hartley Family/Wikimedia Commons: 20
Library of Congress: 28
Alfred Eisenstaedt/The LIFE Picture Collection/Getty Images: 30
Courtesy of Edward Thorp: 39
Steve Hansen/The LIFE Images Collection/Getty Images: 41