The Henry law firm has roots over 50 years deep and was founded by Harold L. Henry who was admitted to the Bar in 1956. During Harold's legal career, most of which was spent as a trial lawyer, Harold also had the privilege and honor of serving as Assistant Attorney General of Missouri, Prosecuting Attorney of Howell County, Probate and Magistrate Judge of Howell County and Circuit Judge of the 37th Judicial Circuit.

In 1974, Harold's two sons, Lynn and Don, joined Harold in the practice of law in the law firm then known as Henry, Henry & Henry. Don left the firm after 28 years to take the office of Associate Circuit Judge of Howell County, a position which he still holds today. Harold, who had been a member of the Missouri Bar for nearly 51 years, died on April 17, 2007.

Lynn, using the skills he learned from his father before him, continues to be one of the most actively involved trial lawyers in the state practicing personal injury, wrongful death and social security disability law in the firm which is now known as Henry & Henry, P.C.