http://www.1st-art-gallery.com/Charles-Wild/The-Conservatory,-Carlton-House,-From-'the-History-Of-The-Royal-Residences'-By-William-Henry-Pyne-(1769-1843)-Engraved-By-R.-Reeve,-Published-1819.html

and this was an interesting one, too...wasn't it? and it somewhat corresponds to another of those calendar 'circles'.....could they all vaguely remember having been programmed with certain illustrations of carlton house? certainly some of them appear to have been able to do so...and they were to code it out upon the above website...'the window' for example...