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labor strikes
Szczepanski, Marian. Playing St. Barbara. [St. Charles, MO]: High Hill Press, 2013.
Davenport, Marcia. The Valley of Decision. New York: Charles Scribner’s Sons, 1942.
Yale, Kathleen Betsko. Johnny Bull. New York: Dramatists Play Service, Inc, 1985.
Francis, Stella M. Camp Fire Girls in the Allegheny Mountains: A Christmas Success Against Odds. Chicago: M. A. Donohue Press, 1918.
Trautman, William Ernst, and Peter Hagboldt. Hammers of Hell. Chicago: The New World Publishing Company, 1921.
Burgan, John. The Long Discovery. New York: Farrar, Straus and Co, 1950.