Do you want fiction? If so the four 'Faerielands' novels may be a place to start. These are 4 Froud-inspired novels which were originally meant to have Froud's art on the cover but usually have non-Froud covers now. The novels are:
Something Rich and Strange by Patricia McKillip
The Wild Wood by Charles de Lint
The Wood Wife by Terri Windling
Hannah's Garden by Midori Snyder
I have read The Wild Wood and the Wood Wife and enjoyed them both. You can see the original covers and read a bit more about them here:
http://www.faeries.net/www/faeries/faerieland/index.cfm
Charles de Lint has written a lot of faerie-themed novels so you might want to check out his website:
http://www.sfsite.com/charlesdelint/littlegrrl-desc01.htm
I keep meaning to read 'the green man' and 'the faery reel', two collections of fae-themed short stories in the 'mythic fiction' series:
http://windling.typepad.com/editing/mythicfiction.html
Faerie themed novels I have enjoyed:
Tam Lin (Pamela Dean)
Jonathan Strange & Mr Norrell & the Ladies of Grace Adieu (Susanna Clarke)
The Jack of Kinrowan (Charles de Lint)
Fae Novels I haven't yet read but really want to:
The Stolen Child: A Novel (Keith Donohue)
The Tooth Fairy (Graham Joyce)
Thomas the Rhymer (Ellen Kushner)
Kingdoms of Elfin (Sylvia Townsend Warner)(short stories)
Scroll down this page for a HUGE reading list of fae themed books:
http://www.endicott-studio.com/rdrm/rrfairies5.html
OK, I'll stop now. Can you tell I'm obsessed??
(by the way if you want nonfiction books on fae folklore I can give you a few titles there as well...)