Geng Barker—Karpis
Ringkasan kegiatan Geng Barker – Karpis > Barker–Karpis gang > 1930–1939

March 30, 1931—Fred Barker released from Kansas State Prison after serving time for burglary; met Alvin Karpis in prison.
June 10, 1931—Fred Barker and Alvin Karpis (alias George Heller) arrested by Tulsa, Oklahoma, police investigating burglary. Karpis sentenced to four years but paroled after restitution made; Fred Barker also avoided jail sentence.
November 8, 1931—Fred Barker killed an Arkansas police chief Manley Jackson.
December 19, 1931—Fred Barker and Alvin Karpis robbed a store in West Plains, Missouri, and involved in the killing of Howell County, Missouri, sheriff C. Roy Kelly.
January 18, 1932—Lloyd Barker received at Leavenworth Prison.
April 26, 1932—Body of Ma Barker's lover A. W. Dunlap found at Lake Franstead, Minnesota; killed by Fred Barker and Alvin Karpis.
June 17, 1932—Fred Barker, Karpis and five accomplices robbed Fort Scott, Kansas Bank.
July 26, 1932—Fred Barker, Karpis (with an augmented gang) robbed Cloud County bank at Concordia, Kansas.
August 13, 1932—Attorney J. Earl Smith of Tulsa, Oklahoma, found killed at Indian Hills Country Club north of Tulsa; he had been retained to defend Harvey Bailey over the Fort Scott bank robbery, but the man was convicted.
On July 25, 1932, Barker, Karpis, DeVol, Jess Doyle and Earl Christman robbed the Cloud County Bank at Concordia, Kansas, and made off with about $250,000 in cash and bonds.
On August 18, they pulled a second job at the Second National Bank of Beloit, Wisconsin, for $50,000.
September 10, 1932—Arthur "Doc" Barker released from prison.
December 16, 1932—Fred and Arthur Barker, Alvin Karpis and gang robbed Third Northwestern National Bank in Minneapolis, killing policemen Ira Leon Evans and Leo Gorski and one civilian. (One gang member Lawrence DeVol in this shooting was also involved in four other police killings-two police officers, Sheriff William Sweet and City Marshal Aaron Bailey, in Washington, Iowa, and Marshall John W. Rose in Kirksville, Missouri, on November 17, 1930, and killing officer Cal Palmer and wounding another officer before being gunned down in Enid, Oklahoma, in 1936.)
April 4, 1933—Fred and Arthur Barker, Alvin Karpis and gang robbed Fairbury, Nebraska, bank.
June 1933—William Hamm of the Hamm's Brewery family kidnapped by Barker–Karpis gang; Hamm released June 19, 1933, after ransom paid.  It is believed by some that the gang turned over half of the Hamm ransom money to the Chicago Mob under Frank Nitti after Nitti discovered that they were hiding Hamm in suburban Chicago and demanded half the ransom as "rent".
August 30, 1933—Barker–Karpis Gang robs a payroll at Stockyards National Bank of South St. Paul, Minnesota, in which one policeman Leo Pavlak is coldly executed and one disabled for life.
September 22, 1933—Two bank messengers held up by five men identified as Barker–Karpis gang; Chicago policeman Miles A Cunningham is killed by the gang after their car crashed during the getaway. (Barker–Karpis gang associate Vernon Miller was allegedly involved in the killing, and reportedly also involved in the Kansas City Massacre in which four lawmen were killed).
January 17, 1934—Gang kidnaps Edward George Bremer, Jr.; Bremer released on February 7, 1934, after ransom paid.
January 19, 1934—Gang wounds M.C. McCord of Northwest Airways Company, thinking he was a policeman.
March 10, 1934—Barker gang member Fred Goetz (also known as "Shotgun George" Ziegler, a participant in the Bremer kidnapping) killed by fellow gangsters in Cicero, Illinois.
April 1934-Doc Barker and associate Volney Davis get a surprise visit from John Dillinger and Homer Van Meter, helping them bury their comrade John "Red" Hamilton after Hamilton died from gunshot wounds sustained in a shootout in St. Paul, Minnesota.
July 1934—Underworld doctor Joseph Moran last seen alive.
January 6, 1935—Barker gang member William B. Harrison killed by fellow gangsters at Ontarioville, Illinois.
January 8, 1935—Arthur "Doc" Barker arrested in Chicago; Barker gang member Russell Gibson killed and his colleague Byron Bolton captured at another address.
January 16, 1935—Fred and Ma Barker killed by FBI in Ocklawaha, Florida (Marion County). Ma Barker was discovered by the FBI tracking her letters sent to her other son. She was writing to him to tell him about a large gator in Lake Weir that everyone had called "Gator Joe", which led to the name of the local restaurant known as "Gator Joe's".
September 26, 1935—The supposed body of underworld doctor Joseph Moran found in Lake Erie; believed killed by Fred Barker and Alvin Karpis. (However, Karpis himself said that Moran had been buried.)
November 7, 1935—Karpis and five accomplices robbed an Erie Railroad mail train at Garrettsville, Ohio.
May 1, 1936—Karpis and accomplice Fred Hunter arrested in New Orleans, Louisiana.
January 13, 1939—Arthur Barker killed trying to escape from Alcatraz Prison.
(Of Barker–Karpis gang/associates: 18 arrested; 3 killed by lawmen; 2 killed by gangsters)