Deceased; Holden died in prison in 1953, Keating died in 1978 after being released.
Bank robbery team known as the Holden-Keating Gang who stole millions of dollars in cash and securities from banks in the 1920s and 1930s; escaped from USP Leavenworth in 1930; apprehended and returned to USP Leavenworth in 1932.
Convicted in 1941 of leading the Duquesne Spy Ring, a group of spies for the Nazis which operated in the US from 1939 to 1941 and aimed to obtain information regarding military and industrial sabotage targets; all ring members were convicted in what was the largest espionage case in US history.
Lang received a sentence of 18 years in prison. He was deported to Germany in September 1950.
A member of the Duquesne Spy Ring, Lang was convicted in 1941 on espionage charges and a two-year concurrent sentence under the Registration Act. Before his arrest, Lang had provided the German Abwehr highly confidential materials essential to the national defense of the United States including the top secret Norden bombsight.
Released from custody in July 1944 after serving 3 years.
American inventor and radio broadcaster; convicted in 1937 of mail fraud for claiming on his radio show that he had discovered a miracle cure for cancer and opening clinics where he charged patients to receive the fraudulent cure.
Deceased; fatally stabbed at USP Leavenworth in 1986 while serving a life sentence.
Leader of the "69 Mob" gang, which sold millions of dollars worth of heroin throughout California in the early 1980s and protected its turf through violence; convicted in 1985 of murder, murder conspiracy and drug traffickingconspiracy; Mitchell is credited with creating the country's first large-scale, gang-controlled drug operation.
Prison authorities describe him as a brutal killer and a former leader of the Aryan Brotherhood prison gang. He has been incarcerated continuously since 1977 and has been convicted of four separate murders while imprisoned, one of which was overturned
Released in 1945 after serving 18 months of a 4-year sentence.
Founding member of the Fair Play Committee at Heart Mountain concentration camp for Japanese Americans evicted from the West Coast during World War II; Emi and six other FPC leaders were convicted of conspiracy to violate the Selective Service Act after protesting the incarceration and encouraging internees to resist the draft unless they and their families were released from camp. The charges were eventually overturned by a Federal Appeals court.
Leader of the Communist Party USA from 1959 until his death in 2000; Hall and 11 party leaders were tried under the Smith Act, which was used to charge and incarcerate perceived enemies of the US government; Hall was convicted in 1948 and sentenced to five years in prison. Hall was subsequently sentenced to an extra three years for jumping bail.
Convicted and sentenced to 40 years imprisonment for his supporting role in tax protestor related shootings. He was transferred to the maximum security prison at USP Terre Haute, Indiana when USP Leavenworth was downgraded to medium security.
Serial killer, rapist, arsonist and burglar; confessed to 22 murders; executed for the murder of Institution Laundry Foreman Robert G. Warnke, which Panzram committed while serving a 25-year sentence at USP Leavenworth.
Held at USP Leavenworth from 1912 to 1942; transferred to the federal prison on Alcatraz Island in 1942.
Convicted of manslaughter in 1909 and murdering a correction officer in 1916; raised and studied birds in his cell at USP Leavenworth and became a leading ornithologist; wrote two books and made significant contributions to the field of ornithology.