skip navigation


Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.


NCJ Number: 186103 Find in a Library
Title: Some Useful Techniques for Envelope Matching
Journal: International Journal of Forensic Document Examiners  Volume:5  Dated:December/January 1999  Pages:397-401
Author(s): Katherine Fletcher
Date Published: 1999
Page Count: 5
Type: Report (Technical)
Format: Article
Language: English
Country: Canada
Annotation: This paper describes research performed in a document-examination case that required the matching of self-sealing envelopes.
Abstract: In April 1997, documents involved in an extortion case were received by the document examiner. A suspect had already been identified by police from other evidence obtained. The document examination centered on whether documents received by the complainants could be associated with specimen material taken from the suspect and his place of work. A major part of the examination involved establishing whether there was any evidence to link the envelopes received by the complainants with specimen envelopes obtained from the suspect's work place. The questioned and specimen envelopes were initially examined to determine whether there were any gross differences in brand, size, printed details or paper type, which would eliminate the possibility of them being from a common source. No differences were found. Information gained from a visit to the factory that manufactures Candida brand envelopes led to the identification of several features that could be useful in comparing envelopes. These were matching the self-sealing gum patterns; paper fiber matching across the top and bottom edges of consecutively produced envelopes; matching the opaque patterns printed inside the envelopes; matching any other printed details on the envelopes; matching the cutter markings on the envelopes; matching the glue patterns on the edges that form the envelope; and matching specific features of custom-made envelopes. The two features that emerged as having the potential to provide the strongest links between envelopes were matching the self-sealing gum patterns and paper fiber matching. Through an examination of these features, it was possible to link the questioned envelopes as having come from the same batch, indicating they were manufactured at a similar time in a production run. 6 figures
Main Term(s): Science and Technology
Index Term(s): Comparative analysis; Document analysis; Forensic sciences; Investigative techniques
To cite this abstract, use the following link:

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.