This contains some history of both Lionel and Aristocraft in the context of Phil jensen's work with both in the 80's.
http://www.npcrr.com/Articles/PhilJensenStory/ThePhilJensenStory.pdf
I just bought a shark shell from Rob. It arrived safe and sound from England on monday. I'm very impressed with the quality and crispness of the resin casting. Certainly a much better starting point than most 3d print jobs.