In this lesson, students analyze primary source documents in an effort to answer the central historical question: Why did the Homestead Strike turn violent? The teacher first recaps labor/industry relations of the era and introduces the Homestead Strike with a timeline. The teacher then models sourcing and close reading techniques with a document: Emma Goldman’s 1931 autobiography. Students then do the same with an 1892 newspaper interview of Henry Frick, followed by corroboration guiding questions that pit the 2 authors against each other. In a final class discussion, students evaluate the validity of the sources and debate whether the historical “truth” about the strike is knowable.