Pinkerton (detective agency)
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Pinkerton is an American private investigation agency and security company established around 1850 in the United States by Scottish-born American cooper Allan Pinkerton and Chicago attorney Edward Ruc
Pinkerton guards escort strikebreakers in Buchtel, Ohio, 1884
Frick's letter describing the plans and munitions that will be on the barges when the Pinkertons arrive to confront the strikers in Homestead
Western Federation of Miners
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The Western Federation of Miners was a labor union that gained a reputation for militancy in the mines of the western United States and British Columbia. Its efforts to organize both hard rock miners
Famous Western Federation of Miners flyer entitled "Is Colorado in America?"
