slightly OT: NMOS gate identification

[Keith]

I'm attempting a painful task of extracting logic from an image of a 
NMOS die manufactured in 1984.  Initially, I'm only going after a small 
portion of logic from the chip.  I have a block diagram which appears to 
roughly match the chip layout, a pinout, and an overall description of 
the logic.

I have very little clue what I'm actually doing, but I'm trying to fix 
that. :)

I'd like to develop a library of images of NMOS logic cells -- and 
perhaps using pattern matching later, try to automate the process.

Does anyone here happen to know this stuff well enough to say, "there's 
a NOR", "there's an OR", "that's an inverter." etc?

Anyone know the types of books I should be looking at to get this type 
of information?  NMOS Chip fabrication?  Much of what I've found talks 
about the actual process, but they normally show side-views of layers. 
I'm looking down on the chip through a few layers and need stuff from 
that perspective.

I have a couple example shots here

http://www.techtravels.org/snippet.jpg
http://www.techtravels.org/snippet2.jpg

Keith

P.S. Yes, I know, I'm crazy.