Thank you Mark. It's a photograph by Szasz-Fabian Jozsef, legitimately purchased from Adobe.com
On the other point...
Where for many cartographers a map is an end unto itself, when it is part of the web illustration set for an as yet unpublished book, and a cowboy steals it and passes it off as something else entirely, it soils the book - it damages my unfinished written work of art.
Where the Observatory first floor is concerned in particular, the "thumbnail" on Bartoli's site had already disappeared before I changed the filename to break the link to the original stored on the Cartographer's Guild server. Also, the thumbnails for the other two floors he stole are still there in their un-watermarked state, even though those links no longer work for the same reason. All this suggests that in my case he really did download the originals.
I am also one of the very few CG artists who was never acknowledged by name, which further supports this theory of mine.
Assuming that I am right, I now have to face the worrying possibility that Bartoli had a pretty good reason to remove the thumbnail of the ground floor from his own site himself before I got there. The most logical explanation is that he was offered something for it, and sold it to someone else. That being the case, he can keep the money, since I am certain it wasn't all that much. The work, after all, is of a particular style (my own), and is unlikely to ever be complimented by any further work in the same style, because there will always be just a little bit missing from all future uploads to ALL the forums I use, (not just this one).
I am more concerned however, that when I do publish my novel, and the Observatory goes up on my author's webpage as part of the supporting media, if someone out there believes that they have purchased all rights in the Observatory ground floor they might even commence legal proceedings against me for 'stealing' my own work.
I will of course be able to provide the original filename.FCW file from which the image was exported, and no one will be able to prove I was paid for it, or provide copies of a signed contract of sale with my name on it - not even Bartoli. The thing I fear is that I may have to sort something like that out with a whole bunch of irate American laywers (and lets face it they do have something of a global rep for being quite unnecessarily vicious, and for bending reality in such a convoluted manner that when taken to the extreme, black may seem white, and vice-versa). This is what makes me feel sick about it all. I've done nothing wrong to deserve it.
That is why all my future images will be missing some small part from now on. I can weather a storm like that once... twice even, but if it should happen multiple times, I fear that my creative spirit may drown in a deluge of bitterness and anger... and where would be the point in that? I should certainly never write or draw anything again, if that were to happen to me.