(written from a Production point of view)
Russell "Russ" Willard Simpson (21 October 1946 – 28 October 2009; age 63) was a model maker employed in 1978 by Magicam, Inc. and has contributed to the production of Star Trek: The Motion Picture. Partaking in the construction of the various studio models, such as the work bee, the company was tasked to build, his most signature contribution was the build of the new Drydock model, after the Star Trek: Phase II version was discarded. Simpson was appointed lead modeler on its construction. 
Career outside Star TrekEdit
Having only one other recorded motion picture credit to his name, as "miniature window manufacturer: miniature effects" for The Hudsucker Proxy (1994), Simpson left the motion picture industry in the early 1990s. A train enthusiast, he started his own business around 1993, "Simpson Products Company", that was located in Placerville, California, designing and manufacturing scaled train miniatures. 
He first started his own business, producing miniature trains to scale as a teenager, at 14 yrs age, according to his wife. This was continued through the rest of his decades. He was producing various products at his Placerville location several years prior to the above-stated 1993. One of his products was custom pool cues; he was a masterful pool player. He did custom work for those around the globe who knew of him, such as specific train models, or other custom items, or helped consult on problems for other model makers (as in movie industry). Russ was an independent and understated genius at what he did, per Nancy A. Gilbert. Simpson ran his company until his death.
Russ Simpson died from a cerebral hemorrhage after many years of self-treatment of insulin-dept Diabetes, with associated problems.