Like the Boston Massacre assessment, this question requires students to consider the relative strengths and weaknesses of a document as historical evidence. Students with a sophisticated understanding of how to source a document will be able to explain that the pamphlet is useful because it shows how Yaqui land was being marketed to American investors. They will also point out that the Sonora and Sinaloa Irrigation Company used the pamphlet for advertising, making it less useful as specific evidence of what Yaqui land was like in the 1890s.