Terry is a partner in the Rapid City law firm Goodsell Quinn, LLP. He has more than 43 years of trial experience, and has authored many articles on trial practice as well as co-author of "Anatomy For Attorneys," reprinted as "Medical Evidence" by James Publishing.
Quinn practices complex civil litigation, concentrating in the areas of medical malpractice, product liability, environmental, business and commercial litigation. He lectures extensively throughout the United States and Canada on various trial related subjects. Quinn is an Adjunct Professor of Law, and concentrates on the subject of negotiation, settlement and jury persuasion.
Quinn, the recipient of the prestigious South Dakota Trial Lawyer of the Year Award, as well as their Lifetime Achievement Award; is the Past President of the State Bar of South Dakota; Past President of the South Dakota Trial Lawyers' Association, and presently serves on the Board of Governors for the South Dakota Trial Lawyers Association, as well as the American Association for Justice (formerly known as Association of Trial Lawyers of America). He has served as Chair of the Board of Trustees for the National College of Advocacy. He has been honored by the National College of Advocacy as a Diplomat, which is the highest academic achievement level awarded by the American Association for Justice. He has been awarded the Advanced Studies in Trial Advocacy by the American Association for Justice. Only 24 out of 56,000 members have received this award.
Quinn served on the faculty for the National College of Advocacy "Ultimate Course in Trial Advocacy", and has served in such positions at Harvard University School of Law, Hastings School of Law, the University of Wisconsin School of Law, Arizona State University School of Law, as well as other major university law schools. He is a member of the South Dakota Trial Lawyers' Association, American Association for Justice, the American Adjudicature Society, the American Society of Law & Medicine, the International Society of Barristers, and the American Board of Trial Advocates.