Thank you very much indeed for your letter of 6th
July, and the enclosed Xerox copies. These are a great
help to me since it is always difficult to keep up to
date with all recent developments at the Pyramids.
I had also heard about the theory of pyramid-construction using molds, but had no "concrete" information on the subject previous to your letter. This idea simply doesn't get off the ground in my view, as even the most casual observation of the inner core masonry of the Great Pyramid, which can be seen in several places, will show that hewn blocks were fitted together with sometimes fairly large joints, which were filled in with mortar, small stones and limestone chips. The theory could only be applied to the outer casing; but again, all the evidence proves that the blocks were cut and then jointed with a fine cement, and only in some much later pyramids were large enclosed spaces filled up by pouring in liquid mud.
Before very long I hope to publish some more of my work, and I may perhaps make reference to your vanishing point theory - giving you full credit of course. It's a pity that the Brooklyn Museum could not offer any help, but I expect this will be a typical response since the whole question is a bit too mind-blowing for scholarly types to grapple with. I wish you luck if you decide to make any further inquiries along the same lines. The article you sent me about the Sphinx mentions that the symposium you refer to is intended to be held in Cairo in October. I must admit I would love to be able to attend, but I doubt whether I shall be able to bring forward a visit to Egypt which I had been planning for February. Also, I don't know what opportunity you would have for raising the vanishing point idea, or even if the symposium would be open to non-archaeologists. But next time I'm in London I will try to find out if the Egypt Exploration Society has any further information, and will let you know if they have.
Finally, I've decided to take on the role of Mr. Scientist and enclose a few observations on the GRAVAC Sun. I hope you find my comments helpful. . .