This may be old news to some, but I discovered an amazing website for quality album artwork downloads:
http://www.albumartexchange.com/
I stumbled onto the site about a year ago and it has become one of my daily visits. I also started sharing many of my own personal 12" and 7" sleeve scans which I take great pains to repair, buff and shine in Photoshop. Check it out if you appreciate album art!!!! And if you're someone who enjoys scanning albums and cds, don't hesitate to contribute.
This is a direct link to the album art I have shared on the site (lots of new wave, 80's, synthpop etc):
http://www.albumartexchange.com/covers. ... groove_art