I believe this was used in the TSR catalog of the year that Mad Monkey vs Dragonclaw came out. They would have one of the artists do a quick color comp which would be photographed and reduced to place next to the description in the catalog before it was published ("pre-pub")
I think you would probably find it in this catalog:
http://tomeoftreasures.com/forum/viewtopic.php?t=4139
I'm not sure, but this other Holloway painting may have been a catalog comp around that same time as well
http://tomeoftreasures.com/tot_original ... spider.htm
On Holloway's site that Deogolf runs, you'll see WG12 catalog comp art and a couple Spelljammer pieces for SJA1 and SJA2
http://www.jimhollowayart.com/id5.html
