At the end of the nineteenth century, inmates at the Minnesota State Prison in Stillwater began publishing a newsletter written and edited by fellow prisoners. For the first time in US history, inmates at a state institution created a regular periodical that was fully their own at every level of production. They used it to discuss news, share their literary and artistic works, and organize for institutional change. Called the Prison Mirror, the newsletter served as a model for similar publications produced by inmates at nearly all of Minnesota’s state hospitals, correctional facilities, and state schools.