Are all historical sources equally trustworthy? How might the reliability of a historical document be affected by the circumstances under which it was created? In this activity, students sharpen their ability to source documents and learn to think critically about what sources provide the best evidence to answer historical questions.
[Teacher Materials and Student Materials updated on 10/27/2020].
Image: Map of forces in Washington County, Maryland during the Battle of Antietam by Robert Knox Sneden, 1861-1865. From the Library of Congress.