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.
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.
Released from custody in July 1944 after serving 3 years.
American inventor, radio broadcaster and personality. Baker rose to fame in the 1930s after advertising on his radio show that he discovered a "miracle cure" for all forms of cancer. He eventually opened two clinics where he and his associates administered the cure, a mixture of water, corn silk, watermelon seeds, clover and carbolic acid, that was injected into patients. He was denounced by the Journal of the American Medical Association as a "a quack, a faker, and a charlatan." Baker was arrested for violating the Brinkley Act after he sent gramophones through the mail to advertise his cancer cure. He was convicted of mail fraud in 1937.
Deceased; executed by hanging at USP Leavenworth in 1930.
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.
Released from federal custody in 1988 after serving 11 years to 50 years.
Served 11 years to 50 years at USP Leavenworth for the 1976 kidnapping and rape of Katie Callaway before being released in 1988; Garrido pled guilty in 2011 to kidnapping, rape and false imprisonment for abducting Jaycee Dugard in 1991 and holding her in captivity for 18 years.
Held at USP Leavenworth from 1912 to 1942; transferred to the federal prison on Alcatraz Island in 1942.
Convicted of manslaughter in 1909 and of murdering a correction officer in 1916; raised and studied birds in his cell at USP Leavenworth and became a leading ornithologist who wrote two books and made significant contributions to the field of ornithology.
Released from custody in 1954 due to ill health while serving an 18-year sentence.
Convicted of espionage in 1942 for leading the Duquesne Spy Ring, a group of 33 spies for the Nazi government of Germany which operated in the United States from 1939 to 1941 and aimed to obtain information that could be used in the event of war and carry out acts of sabotage; all 33 spies either pleaded guilty or were convicted at trial in the largest espionage case in US history.