Biography
Jack Jarvis is named among IWW prisoners placed in the Leavenworth black hole on April 14, 1919 in Charles Plahn’s signed December 1919 account. The group received six days on bread and water and third-grade status, followed by isolation. This establishes actual political-prisoner custody; his underlying individual conviction and full admission/release chronology are not supplied. Source: https://www.marxists.org/history/usa/pubs/one-big-union-monthly/v01n10-dec-1919_One%20Big%20Union.pdf#page=38 Source: https://www.marxists.org/history/usa/pubs/one-big-union-monthly/v01n10-dec-1919_One%20Big%20Union.pdf#page=39
Case
United States Penitentiary, Leavenworth
