As mentioned above, some pages are cropped in the scan. Also, after WotC recently reversed their block on PDF sales of old products, I read that these scans were re-done and OCRed. That did turn out to be true in the case of The Temple of the Frog, which I bought before the ban, and re-downloaded from RPGNow when it was available again. The maps that had been missing before were suddenly back in the new and improved scan. But The Sinister Secret of Salt Marsh still seems to have been scanned in the old haphazard way with no one having checked if the images scanned right, and it's of course not OCRed.
Still, it's worth not having to slog through the garage to run this module again.
[4 of 5 Stars!]