As most of you probably know, there are plenty of patents available that document NES hardware and peripherals. Some of the patents contain very useful information. I remember even seeing hardware schemantics about MMC1 in one patent. Patents can be easily downloaded from, for example, US Patent Office's home site (http://www.uspto.gov/) - please tell me if you know any better place.
Anyway, wouldn't it be possible to have the patent docs on nesdev.parodius.com? Even if not, one could still list the patent names (and description of their contents) so it would be easy to find the patents.