Virginia Tech - Digitial History Reader-Module 5-Industrialization and Its Discontents, The Great Strike of 1877
http://www.dhr.history.vt.edu/modules/us/mod05_industry/context.html
This teaching module created by the faculty and students at Virginia Tech does an excellent job at exploring the reasons why The Great Strike of 1877 began and what were some of its enduring legacies.
Referenced in:
The Outrage of Ordinary Men: Pennsylvania's Role in the Great Railroad Strike of 1877