I looked at NeatImage on the original scan, and I feel the median filter works better. And no, the LucasArchives manual only has that image in it, it's quite low-quality, but I did manage to use it in my monkey island 2 dvd cover (I don't really like the back of the LEC mi2box... nothing against Purcell's painting but everything on top of it just looks cluttered).
[offtopic]Hahaha Steve (Scurvyliver) just emailed me back, the scans I was looking for were here all along: http://scurvy.adventuredevelopers.com/about.html
why didn't I look harder?[/offtopic]
I might upload the original at a later time, it's not very good quality though (the reason why it looks OK on my cover is because it's been darkened so much).