“Finally, the lithographs were for Perring’s book (as well as Vyse’s). As such, standard publishing practice will have ensured that proof copies were made and crucially, that they were approved by Perring before his book was published. It is inconceivable that this proof-checking would not have taken place.”
What are the facts?
When the relevant lithographs were published (the larger ones in 1839, the smaller ones in 1840), Perring was still in Egypt. When any such proofing was done (circa 1839), Perring was still in Egypt—and Perring was on the move, carrying out the explorations detailed in Volume III of Operations. Creighton knew this and chose not to share it with readers of his article:
Suggestions of this being done at a distance with the means available in 1839 are ridiculous. It was Vyse took “Perring’s” work through the press, as noted by Creighton’s sometime hero Charles Piazzi Smyth, who referred to it as
“An enormous folio book or portfolio, usually termed Perring’s Plates of the Pyramids, and containing many excellent lithographs of them from his drawings; but the book was got up, and its letterpress edited by Colonel Howard Vyse, and includes contributions from Dr Birch, Mr Lane, and Mr Andrews as well.”