Questioned Document Authenticity Alterations Ink Age Determination Expert Witness

Provides Opinion & Testimony In:

Forensic Analysis, Questioned Document, Authenticity, Alterations, Ink, Age Determination, Fraud, Workers Compensation, Piracy, Handwriting, Fingerprints, Counterfeits, Cold Case Investigation, Trace Evidence, Arson, Explosives, Computer Forensics, Daubert Frye Preparation, Trial Assistance, Medical Malpractice, Email Analysis, history origin, Criminal Investigations, Civil Investigations, Civil Disputes, Wills Disputes, Probate Disputes,


Expert was born in Asheville, North Carolina.  He has earned an Associate of Arts degree from Florida Technological University in Orlando, a Bachelor of Science in Forensic Science degree from the University of Central Florida, also in Orlando and a Master of Forensic Sciences degree from Antioch University in Yellow Springs, Ohio.  He has worked for the U.S. Government as a forensic scientist for over 25 years.  During that time he has worked on many notable cases to include; the Unabomber, the John Wilkes Booth diary, numerous accused Nazi war criminals, e.g. John Demjanjuk, a.k.a. Ivan the Terrible, the reinvestigation of the Dr. Martin Luther King murder, the reinvestigation of the Kennedy assassination/CIA conspiracy theory, the Quedlinburg Treasure, the 1933 Saint-Gaudens Double Eagle gold coin, the Jon Benet Ramsey murder investigation, the 9/11 terrorist attacks, the DC Sniper investigation and the 2010 Brazilian presidential election scandal.   In addition, his efforts have directly assisted the U.S. and foreign Governments in solving matters concerning multimillion dollar financial crimes investigations, corrupt officials, murders, illegal transfers of nuclear materials, terrorists, counterfeit food and drug products, international border disputes and falsified international treaties.   Expert has testified as an expert witness in state, federal and military courts of law, as well as testified or been deposed in foreign court systems to include; Austria, Australia, Canada, Germany, Sri Lanka, and Thailand.  He has also testified at The Hague in the Netherlands and three times before the U.S. Congress.  He most recently held the position of Laboratory Director and Chief Forensic Scientist for the United States Secret Service.  In that role, he managed up to 120 scientists, technicians, and support staff in the areas of document analysis, handwriting, fingerprints, trace evidence, audio and video analysis, photography, toolmarks, computer evidence and counterfeit analysis.  In 2005, Expert retired from government service and began a private independent forensic laboratory and consulting firm.


Chief Forensic Scientist and President – Private Company
San Luis Obispo, California


Associate of Arts Degree – Received June 1976
Florida Technological University
Orlando, Florida

Bachelor of Science in Forensic Science Degree – Received August 1979
University of Central Florida
Orlando, Florida

Master of Forensic Sciences Degree – Received June 1983
Antioch University
Yellow Springs, Ohio

Pertinent Specialized Courses:

Forensic Microscopy Course – March 1978
McCrone Research Institute
Chicago, Illinois

Atomic Absorption Spectrophotometry – April 1979
Perkin-Elmer Corporation
Gaithersburg, Maryland

Gas Chromatography Course – December 1979
Virginia Polytechnic Institute and State University
Gaithersburg, Maryland

Advanced Gas Chromatography – March 1980
Perkin-Elmer Corporation

Advanced High Pressure Liquid Chromatography Course – January 1981
Virginia Polytechnic Institute and State University
Washington, DC (course location)

Ink and Paper Analysis Seminar – January 1981
U.S. Air Force Office of Special Investigations
Washington, DC

High Pressure Liquid Chromatography/Mass Spectrometry – July 1981
U.S. Justice Department, F.B.I.
Quantico, Virginia

High Pressure Liquid Chromatography/Computer Operation – March 1984
Perkin-Elmer Corporation
Rockville, Maryland

Questioned Document Course – February 1985
U.S. Secret Service
Washington, DC

Fourier Transform Infrared Spectroscopy Course – June 1986
Nicolet Analytical Instruments
Lanham, Maryland

Scanning Electron Microscopy – September 1994
Philips Electronic Instruments
Mahwah, New Jersey

ASCLD/LAB Inspector Training Course – January 2000
Portland, Oregon

Work Experience:

December 1975 through March 1979
Laboratory Technician
University of Central Florida

March 1979 through September 1979
Bureau of Alcohol, Tobacco and Firearms

September 1979 through July 1982
Forensic Chemist
Bureau of Alcohol, Tobacco and Firearms

July, 1982 through June, 2005 (retired)
Counterfeit Specialist
Questioned Document Examiner
Lead, Instrumental Analysis Section
Lead, Instrumental and Computer Analysis Section
Senior Document Examiner/National Expert for the United States Secret Service
Chief, Questioned Document Branch
Assistant Laboratory Director
Laboratory Director/Chief Forensic Scientist
United States Secret Service

June 2005 to present
Chief Forensic Scientist and President
Stewart Forensic Consultants, LLC

Available Upon Request

Guest Speaker:
Available Upon Request

Specialized Tours/Training:
Available Upon Request

Available Upon Request

Original Research Publications/Presentations:
Available Upon Request

Professional Affiliations:
American Academy of Forensic Sciences – Fellow
Canadian Society of Forensic Scientists (past member)
American Society of Crime Laboratory Directors
Document Security Alliance (past member)
Mid-Atlantic Association of Forensic Scientists (past member)
California Association of Licensed Investigators
Forensic Expert Witness Association
American College of Forensic Examiners Institute
American Chemical Society
Association For Former Intelligence Officers
Business Espionage Controls & Countermeasures Association

Offices Held:
Mid Atlantic Association of Forensic Scientists
November 1981 to October 1984.

American Society of Crime Laboratory Directors
Board of Directors
September 14, 2000 to September 2003

Document Security Alliance
Board of Directors
December 2003 to November 2004

American Board of Forensic Examiners
Board of Directors
February, 2009 to December 2009

The Academy
Board of Directors
June 2007 to present

The American College of Forensic Examiners Institute
Education Committee
July 2012 to July 2013

Forensic Research & Criminology International Journal
Editorial Board
Honorable Editor
June 2015 to present




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