This post was originally published at Novelicious.com and is now at WritingTipsOasis.com. WritingTipsOasis.com acquired Novelicious.com in June 2022.
Maybe I'm behind the times (it happens often) and you've all seen this website already. But just in case you haven't, I'd like to point you in the direction on The Book Cover Archive site, which is basically, well, an archive of book covers…
They also have a blog too. It's awesome. Let me know what you think.
(image from here)