Acknowledgments, List of Figures, Introduction: “The Necessity of Organization”: Gender, Class, and Industrialization During the Progressive Era, Chapter 1: “I Must Be That Someone”: Mary Kenney and the Chicago Labor Community, Chapter 2: “A Noble Young Woman on Fire for Her Cause”: Mary Kenney O’Sullivan and the Boston Labor Community, Chapter 3: For Those “Willing to Assist”: The Formation of the National Women’s Trade Union League, Chapter 4: “The Fight for Subsistence”: The Early Years of the Boston Women’s Trade Union League, Chapter 5: “A General Smash-Up”: The Boston Women’s Trade Union League Comes of Age, Conclusion: “We Stand as One”: The Limitations of Cross-Class Alliances after 1912, Bibliography, Index