- Famous in the West
- Cunningham provided information about El Paso, Texas in the late nineteenth century. He also wrote about early settlers, marshals, and criminals of the west in that time period. He wrote about "Billy the Kid," First Sergeant James B. Gillett, Tom Threepersons, Dallas Stoudenmire, John Wesley Hardin, and others. texashistory.unt.edu/ark:/67531/metapth29618/