Did not get an indication as to the source but I would assume that to some degree the general layout is consistent with the vehicles.. The zero station appears to be above the radius of the NC so I imagine that generating a Nose cone scaled to a BT-55 woudl be relatively easy to do. This was the sole content I received from Professor Wessling so I am not going to look a gift horse. As for the fin shape I cannot tell if it is a slab with triangular LE or if this is a diamond fin. The Castor flew with both.

As for the general dimensions from the stations they seem to tally with the Astronautix specifications of 46.2 ft and 3.3ft for the airframe diameter. The frustum around the engine bell seems to look right, and I suppose you squint the length of the tubular section at the very base from the drawing.

I agree that this is rather more of a representation than a scale crawing, but to your point, the MR drawings that I cadged from Bluebooks were close enough.

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