Although it employs the methods and concepts of modern linguistics (and sometimes makes use of statistical analysis and computer databases), forensic linguistics is at least 200 years old.
According to Gerald R. McMenamin (Forensic Linguistics: Advances in Forensic Stylistics), “hundreds of studies — in the form of journal articles and books — have been done on style, stylistics, and questioned authorship. German studies of Old Testament authorship date back at least to the middle of the 19th century. In addition, evidence has been presented in multiple court cases, and numerous judicial opinions have been documented based on evidence of forensic stylistics.
These cases date as far back as the 1728 Trial of William Hales in England and the 1846 Pate v. People case in the US (pp. 86-7).”
To apply the tools of forensic linguistics to your case, please contact Alan Perlman, Ph.D., at 603-899-3043, or via email.