Ralph Chaplin, Prision Photograph, September 1918

Telegram from Ralph Chaplin to his wife Edith from Levenworth Prision, 1919.

Bars and Shadows: The Prison Poems of Ralph Chaplin is a collection of poems written by Ralph Chaplin during his time in prison.

A powerful and moving collection of poetry and prose by ralph Chaplin, 1917.

Levenworth Penitentiary, Ralph Chaplin Records, National Archives, 1918. In 1918,

the United States Penitentiary at Leavenworth was already an established federal facility, having opened in 1895, and was home to notable prisoners

Letter to Raplh Chaplin from Carl Sandberg, Washington State Historical Society, 1941.

Letter from Warden at levenworth to Edith Chaplin, National Archives, 1922.

Letter from ralph Chaplin to his Father Edgar Lewis Chaplin, National Archives, 1922.

The "Sabotage kitten song" refers to "That Sabo-Tabby Kitten," a 1910s IWW (Industrial Workers of the World) union song by Ralph Chaplin about industrial sabotage. The song uses a cat with a soft paw that can become a claw as a symbol for sabotage tactics, encouraging workers to take direct action against their employers by "feed[ing] him milk and make him thinner" and "step[ping] on things that the boneheads bow to"