Houghton Mifflin Company, pp. p. 256 Retrieved on 12 March 2009. Portrait of Charles M. Schwab. Andrew Carnegie Online Archives. Carnegie Mellon University
DescriptionPortrait of Charles MichaelSchwab.jpg English: Portrait of Charles MichaelSchwab Date no later than 1921 Source The World's Work, 1921: https://archive
DescriptionHaymarketMartyrs.jpgPortraits of the Haymarket Martyrs Date 1887 Source http://www.lucyparsonsproject.org/images/images_haymarket8_large.jpg Author Frank