Samuel Hopkins Adams, The Great American Fraud. Chicago: Press of the American Medical Association, 1906: 1, 2.
Bemidji [MN] Daily Pioneer, January 7, 1905: 3 (bottom right).
Buffalo [NY] Courier, March 16, 1912: 4.
Chicago Eagle, March 10, 1906: 5.
Collier's, June 3, 1905: 6.
Country Gentleman, November 1930: 7.
Daily Press [Newport News, VA], November 23, 1906: 8.
Evening Times-Republican [Marshalltown, IA], September 17, 1903: 9 (bottom).
Film Fun, May 1922: 10 (second from bottom).
Courtesy of the General Federation of Women's Clubs: 11.
Hyland's, hylands.com: 12.
The Independent, June 30, 1910: 13.
Kalispell [MT] Bee, May 5, 1903: 14.
Ladies' Home Journal, January 1898: 15.
Library of Congress, Manuscript Division, Papers of Harvey W. Wiley: 16, 17.
Library of Congress, Prints & Photographs Division:
LC-DIG-ppmsca-25463: 18; LC-USZ61-732: 19; LC-USZ61-1989: 20; LC-USZ61-733: 21; LC-USZ62-107024: 22; LC-USZ62-55447: 23; LC-USZ61-576: 24; LC-USZ61-728: 25; LC-USZ62-55763: 26; LC-USZC2-3651: 27 (top left); LC-DIG-ppmsca-09485: 28; LC-USZ62-5379: 29; LC-USZ61-768: 30; LC-USZ62-51782: 31 (top); LC-USZ62-50217: 32 (bottom); LC-DIG-ppmsca-36062: 33; LC-DIG-ppmsca-26074: 34; LC-DIG-ppmsca-26036: 35; LC-USZ62-68363: 36; LC-USZ62-89917: 37; LC-DIG-ppmsca-35977: 38 (top); LC-USZ62-55461: 39 (bottom left); LC-USZ62-125525: 40; C. M. Bell Studio Collection: LC-B5-28192A: 41; Carol M. Highsmith Archive: LC-HS503-5903: 42; LC-HS503-3874: 43; George Grantham Bain Collection: LCB2-5028-7: 44 (left); LC-B22-368-11: 45 (left); George W. Harris Collection: LC-DIG-ppmsca-38923: 46; Harris & Ewing Collection: LC-H25-85182-K: 47; LC-H261-4146: 48; LC-H22-D-1893: 49; LC-H2-B-5176-4: 50; National Photo Company Collection: LC-F81-25909: 51; LC-F82-4927: 52; New York World-Telegram and the Sun Newspaper Photograph Collection: LC-USZ62-132336: 53 (bottom); Harvey W. Wiley Collection & Papers: 54; LC-USZ6-2056: 55; 56; LC-USZ62-95796: 57; 58; 59; 60.
Los Angeles Times, October 27, 1937: 61.
Louisville [KY] Post, March 1912: 62.
Lyceum News, April 1912: 63.
National Library of Medicine, Images from the History of Medicine: front flap, 64, 65, 66, 67, 68 (left and right), 69, 70, 71, 72, 73, 74.
National Museum of Health and Medicine, Otis Historical Archives: 75.
New York Sun, October 13, 1903: 76 (top); November 11, 1908: 77.
New York Tribune, February 23, 1919: 78 (bottom right).
Perrysburg [OH] Journal, June 21, 1912: 79.
San Francisco Call, October 12, 1903: 80 (top right).
Shutterstock, Inc.: 3, 81.
Starkville [MS] News, October 7, 1904: 82.
United States Food and Drug Administration, History Office: 83, 84, 85, 86, 87, 88, 80, 90, 91, 92, 93, 94, 95 (right), 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110 (top and bottom), 111, 112, 113, 114.
Courtesy of Vassar College Library, Archives and Special Collections, Ruth Lamb Atkinson Papers: 115.
Washington [DC] Post, April 1, 1932: 116.
Washington [Olympia] Standard, March 31, 1905: 117 (top left).
Washington [DC] Star, March 17, 1912: 118; June 13, 1924: 119 (top); October 19, 1923: 120 (left).
Washington [DC] Times, December 29, 1902: 121 (bottom left); May 21, 1904: 122.
Wellcome Collection: 123, 124 (middle), 125, 126, 127.
Wikimedia Commons: 128; Creative Commons Attribution-Share Alike 2.0, Sam LaRussa: 129.
Harvey W. Wiley, Harvey W. Wiley: An Autobiography, Indianapolis: Bobbs-Merrill, 1930: 130, 131, 132.