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Samuel Gompers, early labor leader and founder and president of the American Federation of Labor, circa 1890. (Photo by Underwood Archives/Getty Images)

Samuel Gompers, early labor leader and founder and president of the American Federation of Labor, circa 1890. (Photo by Underwood Archives/Getty Images)

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Portrait of Samuel Gompers, circa 1800s. (Photo by Fotosearch/Getty Images).

Portrait of Samuel Gompers, circa 1800s. (Photo by Fotosearch/Getty Images).

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English born American labor leader Samuel Gompers (1850 - 1924), who founded the Federation of Organized Trades and Labor Unions in 1886 and led the American Federation of Labor (AFL). (Photo by Topical Press Agency/Getty Images)

English born American labor leader Samuel Gompers (1850 - 1924), who founded the Federation of Organized Trades and Labor Unions in 1886 and led the American Federation of Labor (AFL).   (Photo by Topical Press Agency/Getty Images)

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Samuel Gompers, president of the American Federation of Labor, standing outside surrounded by a group of men, Chicago, Illinois, circa June 16, 1908. This image was probably taken during the 1908 Republican National Convention which was held at the Coliseum building, located at 1513 South Wabash Avenue. (Photo by Chicago Sun-Times/Chicago Daily News collection/Chicago History Museum/Getty Images)

Samuel Gompers, president of the American Federation of Labor, standing outside surrounded by a group of men, Chicago, Illinois, circa June 16, 1908. This image was probably taken during the 1908 Republican National Convention which was held at the Coliseum building, located at 1513 South Wabash Avenue. (Photo by Chicago Sun-Times/Chicago Daily News collection/Chicago History Museum/Getty Images)

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September 1920: English born American labour leader, Samuel Gompers (1850 - 1924), wearing flight dress and making hand signals. Gompers founded the Federation of Organized Trades and Labor Unions and led the American Federation of Labor (AFL). General Photographic Agency (Photo by General Photographic Agency/Getty Images)

September 1920:  English born American labour leader, Samuel Gompers (1850 - 1924), wearing flight dress and making hand signals.  Gompers founded the Federation of Organized Trades and Labor Unions and led the American Federation of Labor (AFL).  General Photographic Agency  (Photo by General Photographic Agency/Getty Images)