NDL certainly does not mind, and in fact, even encourages the use of this site for research material. The reader is hereby cautioned, however, that much of the materials found here are copyrighted by NDL. As such, this site (or NDL) should be referenced in such bibliographies as are occasioned by books, articles, research papers, lectures, and the like. The suggested bibliography should be in the form of:

Norwitch, Frank Harley. Norwitch Document Laboratory. “(Specific page titles).” Online. Available https://www.questioneddocuments.com. (Date you accessed site).

Thank you for your considerations. If you have any questions concerning this, please contact us.

Overview Topics

Selecting the Expert                                                       Indented Writing Retrieval

Ethics & the Expert                                                         Typewriter & Typewriting Examinations

The Forensic Document Laboratory                          Paper & Watermark Examinations

Handwriting Theory                                                       Rubber Stamp Signatures

Handwriting Standards & Disguise                            Miscellaneous Examinations

Signatures & Forgery                                                     Questioned Document Opinions

Original Ink Determination                                         Court and the Document Examiner 

Photocopy & Photocopier Examinations                  Landmark Legal Opinions  

Photocopy Forgery                                                         Art or Science

Alteration/Obliteration & Ink Examinations          Recommended Reading

Evidence Submission


Rev 06/19

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