This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
The Federal prison at Rock Island Illinois c. The Federal prison at Rock Island Illinois small strip of land in the Mississippi River held between and Confederate prisoners This sketch of the prison was found in letter written by Confederate soldier James Duke to his cousin in Georgetown Kentucky The drawing by soldier identified