SWTPC you gotta check this one out. There is a whole bunch of scanned images of the real deal as well as manuals and other documentation like schematics and brochures.
Computer5 - The comprehensive directory lists almost all of website related to computer in the world which is classified by Categories to easily search.
This place has some very cool links to emulation sites. They
do have advertising banners at the top, but they are not annoying at all -
just ignore them. It also does not try to hijack your machine. I've checked
out the site - it seems quite benign. Give them a look if you get a chance.
DataRescue's IDA Pro disassembler - I have a link to this site only because it's the best disassembler on the market. I have been using it for years for all types of microprocessors and it works. I even have some plugin files for FLEX and OS9 that the author helped with. I have used it to disassemble FLEX for the 6809 and 6800.