A rich array of primary sources generated by a single, troubling event–the Camp Grant Massacre of 1871– illuminates the world of the mid-nineteenth-century U.S.-Mexico borderlands. This world was home to an unusually diverse collection of human communities: Anglo Americans, Mexican Americans, Tohono O'odham and Apache Indians. The records available on this site mirror this diversity and include court cases, Indian depredation claims, calendar sticks, newspaper articles, treaty negotiations, letters, speeches, early historical accounts, and U.S. Army reports. This collection of documents was gathered by Karl Jacoby as part of his research for his book titled "Shadows at Dawn: An Apache Massacre and the Violence of History." Brown University Libraries does not own the originals. Additional context is available at the accompanying website created by Karl Jacoby: https://www.brown.edu/Research/Aravaipa/.