I know about Intel 64 and IA-32 Architectures Software Developer's Manuals. I also know that these cover all the legacy & old processor ISAs.
But I want the individual manual (the one that released along with the processor) for each of the processors.
I managed to find the 80386 manual
EDIT:
I'm starting bounty.
This site contains links to several of the manuals, such as the 486 Developer's Manual and others:
These pages include the developer's manual, errata, etc. It doesn't seem to extend to modern processors, such as the Core series.
Intel has made a lot of processors. Which other ones are you after? "Each" is... a lot!