HUNT SLAYERS OF RACKETEER Ex-Convict, Ambitious for Control of Slot Machines, Killed. CHICAGO, Aug. 31 looked to the slot machine racket today for a clue to the slaying of John Sullivan, 41, who was killed in an alley near his home by two men. One of the slayers fired a shotgun shotgun charge into Sullivan's back. While the victim lay on the ground, the other pressed a revolver against his head and fired oae shot Miss Muriel Manlove said she saw the slayers emerge last night from an automobile in which a confederate confederate remained. Police theorized the slaying was the aftermath of Sullivan's attempt to succeed his brother Joseph as a | leading figure in a slot machine syndicate. The brother was killed in an automobile accident two years ago. Investigators said Sullivan was a former convict with a long police record. His wife, Rea, 28, who heard the shooting, told police, the latter said, she knew who killed him, adding "I knew this was coming, coming, and I know why." She declined to divulge the names of the slayers for fear they would "get me the same as they got him." The slaying climaxed a day of raids on slot machine operators by squads from the state's attorney's and sheriff's offices. i ( i I !