Comment on Not Sure How to Tell When Masking Technique Has Been Removed in Kryptos K4 by theoracle

I forgot to say. The first book ever written on Steganograpy ( Steganographia by Johannes Trithemius died 1516.) has been at the Library of Congress since 1940 where Sanborn’s father was the Director of Exhibits and where Sanborn spent a lot of his time growing up, I wonder if he’s read it.