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imageA reader writes:

Could you please help me on a source for the (attached) photo?  It is on Dr Soons’ shroud3d website, under the heading "Image Qualities of the Shroud – Superficiality", but is not sourced there.

I am trying to source all of my 60+ Powerpoint slides on the SoT.   I sent an email to Dr. Soons but received no answer.

I have found the following around the Internet:





Now I am number 5, I guess.