Barker arrested for highway robbery in Webb City, Missouri. March 5, 1915Herman Barker arrested for highway robbery in Joplin, Missouri. (Herman and Lloyd Barker reportedly involved with the Central Park Gang of Tulsa, Oklahoma.) July 4, 1918Arthur "Doc" Barker involved in US automobile theft in Tulsa, Oklahoma; arrested (#841) (escaped). 1920–1929 February 19, 1920Arthur Barker arrested in Joplin, Missouri (#1740); returned to Tulsa, Oklahoma. 1921Lloyd "Red" Barker arrested for vagrancy in Tulsa, Oklahoma. January 15, 1921Arthur Barker aka "Claude Dade" involved in attempted bank robbery in Muskogee, Oklahoma; arrested (#822). January 30, 1921Arthur Barker aka "Bob Barker" received at the Oklahoma State Prison (#11059); released June 11, 1921. August 16, 1921Arthur Barker and Volney Davis involved in killing of night watchman Thomas J. Sherrill in Tulsa, Oklahoma. (According to other sources , Thomas J. Sherrill. was a night watchman at St. John's Hospital in Tulsa.) January 8, 1922Central Park Gang involved in attempted burglary in Okmulgee, Oklahoma; shootout results in one burglar dead while police Captain Homer R. Spaulding dies of his wounds on January 19, 1922. One gang member is sentenced to life in prison while another had his sentence overturned. January 16, 1922Lloyd Barker received at Leavenworth Prison (#17243) after arrest for robbing mail at Baxter Springs, Kansas and sentenced to 25 years; released 1938. February 10, 1922Arthur "Doc" Barker received (#11906) at Oklahoma State Prison for the murder of Sherrill. 1926Fred Barker robbed bank in Winfield, Kansas; arrested. March 12, 1927Fred Barker admitted to Kansas State Prison. August 1, 1927Herman Barker cashed stolen bank bonds at the America National Bank in Cheyenne, WY. Sheriff Deputy Arthur Osborn flagged down Barker's car. Barker picked up a gun from the vehicle's seat and shot Osborn. Osborn died as a result. August 29, 1927Herman Barker commits suicide in Wichita, Kansas after being pulled over by a motorcycle cop with a sidecar. (Wichita Policeman J.E. Marshall had been killed on August 9, 1927 by the Kimes–Terrill Gang that Herman was associated with. Five other policemen were killed by the Kimes gang. See ODMP). 1930–1939 March 30, 1931Fred Barker released from Kansas State Prison after serving time for burglary; met Alvin Karpis in prison. June 10, 1931Fred Barker and Alvin Karpis (alias George Heller) arrested by Tulsa, Oklahoma Police investigating burglary. Karpis sentenced to 4 years but paroled after restitution made; Fred Barker also avoided jail sentence. November 8, 1931Fred Barker killed