I remember when I studied proper design work (this was just before I did landscape design and then everyone was allowed to be “artistic” and draw like 4 year olds) we had to show our ability at technical drawing and copy out existing plans of equipment – lay it out on paper and do the proper presentation, lettering, etc. One of the images was certainly Stephenson’s Rocket. I just wonder if Chris’ thoughts about it being a design exercise or something along those lines may be in the right direction.