Very Good! This item is described precisely on page 268 of the book: "An article by Robert Hunt, on Compound Plate Printing, was published in the Art Journal in 1848 ... To illustrate these processes, Mr. Whiting printed some of his most remarkable designs on a sheet of cardboard inserted in the above named periodical." This included the Victoria head and the the essay for an adhesive label, printed in two different formats. Both are described in great detail earlier in the book. It was interesting to note that according to the author this specimen sheet had become rare, even in 1881 when the book was published. Well done and many thanks, wt1!
If anyone is interested, the HathiTrust Digital Library has digitized the contents of the Art Journal. The article on compound printing can be viewed here: https://babel.hathitrust.org/cgi/pt...015009040968
view=1up seq=266 on page 194. Unfortunately, it does not have a scan of the specimen sheet.
I wonder if any forum member has a copy of the International Engraver's Line by Gene Hessler. Although Charles Whiting doesn't appear to be an engraver, he may still be listed. It would be interesting to see what biographical information is covered.