Providing Professional Forensic Document Examination Services throughout California and the Pacific Northwest

We conduct scientific examinations, comparisons, and analyses of documents to:

Establish Genuineness, Detect Counterfeit, and Reveal Alterations, Additions, or Deletions

Identify or Eliminate Writers

Identify Sources of Machine-Produced Documents (Typewriters, Printers, or Graphic Arts Processes)

Detect Indented Writing

Preserve and/or Restore Legibility


We write technical reports, give expert testimony, and provide document examination, training, and education.

Central Valley Document Examination Services LLC

James A. Tarver, Forensic Document Examiner