The National Congress of American Indians, a given Wikipedia article, as well as Stephen Pevar’s Timeline, all disagree on certain dates. When two sources group dates differently, it can confuse the reader as to what event went first, or it can confuse which category is appropriate for which event. For example, the NCAI groups Pelvar’s “Tribal Independence” and “Agreements Between Equals” into one category, the “Colonial Period.” This could suggest that the events aren’t exactly in the same order. How can one trust the sources to keep the same order, if they have differing perspectives on the timeline? This is problematic because the reader cannot know if events concur and which events affected the outcome of the