I just purchased the complete Lincoln Cent Encyclopedia by Shane M. Anderson today and I am impressed. It contains a wealth of knowledge and some really good pictures. I was able to attribute my 09s vdb as a die 3 obverse and some really nice minor varieties. :thumb:
The cool thing about the SVDB die attributions is that they can all be attributed by looking strictly at the mintmark and nothing else. 4 dies and 4 unique MM locations.
I like the book too, because it tells you if there are OMM's for a certain series, DDO's/DDR's, and other errors that you may/ may not waste your time to look for.