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John Trestrail is a life member of NAMA and a member of the New Mexico Mycological Society. He served as the Chairman of NAMA’s Toxicology Committee from 1990-1999. He is one of the contributing authors to the book Handbook of Mushroom Poisoning: Diagnosis and Treatment, by Spoerke and Rumack, published in 1994. He has presented many lectures on mushrooms both in the USA, Europe, and Asia.

Mr. Trestrail served as a volunteer with the United States Peace Corps from 1968-1970. He is a practicing boarded toxicologist, and for many years, was a visiting instructor at the FBI National Academy in Quantico, Virginia, on the subject of criminal poisoning.

For 33 years (1976-2009), he served as the Managing Director of one of the nation’s certified regional poison centers. He has been honored as a Fellow by the American Academy of Clinical Toxicology, and is a Diplomate, by examination, of the American Board of Applied Toxicology. Mr. Trestrail founded the Center for the Study of Criminal Poisoning, where he now serves as the Director, as well as the Toxicological History Society. He has been featured in multiple episodes on The Discovery Channel, The History Channel, The Learning Channel, and PBS.

He is the author of the pioneering book Criminal Poisoning: An Investigational Guide for Law Enforcement, Toxicologists, Forensic Scientists, and Attorneys, published by Humana Press, in 2000 (2nd edition in 2007). He is also one of the co-editors of the popular book Toxicology Secrets, published by Hanley and Belfus Publishers, in 2001. His third book The Poison Quiz Book 2nd Ed., was published by McGraw-Hill, in 2006.

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