◆ SpookStack

PG 9-2330 During the course of this investigation, February, March, and April, 1971, contact has been maintained on a regular basis with the U. S. postal inspectors at Pittsburgh, Pa., ‘the U. S. Secret Service, the Pittsburgh, Pa., Police Department, the Alcohol, Tobacco and Firearms Division, the McKeesport, Pa., Police,Department, the Homestead, Pa., Police Department, as well as numerous other police departments in Allegheny County. During these contacts the various letters attributable to the unknown subject were exhibited in an effort to determine whether any of these departments or their personne] received or observed any such writing or printing. Personnel of these agencies all ddvised that their files were negative concerning letter communications and were unable to furnish possible suspects as to the letter writer. 3]