Sources

Bryan, Patricia L., and Thomas Wolf. Midnight Assassin: A Murder in America's Heartland. Iowa City: U of Iowa, 2007. Print.
Gainor, J. Ellen. "Susan Glaspell, 1876-1948." The Nineteenth Century to the Present. Ed. J. Ellen Gainor, Stanton B. Garner, and Martin Puchner. 2nd ed. New York: W.W. Norton & Company, 2014. 515-19. Print. Vol. 2 of The Norton Anthology of Drama. 2 vols.
- - -. Susan Glaspell in Context: American Theater, Culture, and Politics, 1915-48. Ann Arbor: U of Michigan, 2004. Print.
Glaspell, Susan. "Trifles: A Play in One Act." 1916. The Nineteenth Century to the Present. Ed. J. Ellen Gainor, Stanton B. Garner, and Martin Puchner. 2nd ed. New York: W.W. Norton & Company, 2014. 519-28. Print. Vol. 2 of The Norton Anthology of Drama. 2 vols.
"John Hossack: Homicide." Iowa Cold Cases. Iowa Cold Cases, n.d. Web. 23 Apr. 2014. <http://iowacoldcases.org/case-summaries/john-hossack/>.
"Mrs. Margaret Hossack." Endeavors. University of North Carolina at Chapel Hill, 1 Sept. 2005. Web. 23 Apr. 2014. <http://endeavors.unc.edu/fall2005/bryan.php>.
Ozieblo, Barbara, and Jerry Dickey. Susan Glaspell and Sophie Treadwell. London: Routledge, 2008. Print. Routledge Modern and Contemporary Dramatists.
"Susan Glaspell." American Literature. N.p., n.d. Web. 23 Apr. 2014. <http://americanliterature.com/author/susan-glaspell/bio-books-stories>.
"Susan Glaspell." Encyclopaedia Britannica. Encyclopaedia Britannica Online Academic Edition. Encyclopædia Britannica Inc., 2014. Web. 22 Apr. 2014. <http://www.britannica.com/EBchecked/topic/234882/Susan-Glaspell>.
Waterman, Arthur. "Susan Glaspell." American Short-Story Writers, 1880-1910. Ed. Bobby Ellen Kimbel and William E. Grant. Detroit: Gale Research, 1989. Dictionary of Literary Biography Vol. 78. Literature Resource Center. Web. 22 Apr. 2014.