The Evolution of Science Fiction discussion

Somebody posted a link to a list of science fiction books by year or decade. I can't find it now. The link might have been to Locus but I can't find the list there either. Can somebody repost that link or tell me which discussion topic it was posted in?
Thanks.

Hi Buck not sure if this is the link you were looking for but this has books by decade (link to 60's)

http://www.magicdragon.com/UltimateSF...

Thanks Jo. Not sure, but I don't think that's the link I remember as having been posted before; but it certainly is similar.