America- The Gilded Age
No author listed. J.P. Morgan Biography. the biography channel website. February 2014. http://www.biography.com/people/jp-morgan-9414735.
Alexander Graham Bell
No author listed. Alexander Graham Bell. The biography channel website. February 2014. http://www.biography.com/people/alexander-graham-bell-9205497
The Great Railroad Strike of 1877
Steven. The Great Railroad Strike, 1877. libcom.org. February 9, 2014. https://libcom.org/history/articles/us-rail-strikes-1877