(Received 19 February 1985; accepted 29 March 1985)
Published Online: 1985
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The comparison of round-hole perforations is discussed in terms of a case involving threatening and obscene anonymous letters sent to a young girl. The disguised, block style hand-printed letters could not be successfully compared with the suspect's normal handprinting. The last communication to the victim was a handwritten letter, subsequently identified with the suspect. A comparison was made between the postage stamp on the handwritten letter, now of known origin, with the postage stamps on each of the six anonymous letters.
Chief document examiner, Chicago Police Department, Crime Laboratory, Chicago, IL
Stock #: JFS11075J