I've come across a couple of interesting sites for Elizabeth Woodville. The more detailed one is here.
Elizabeth has had some hard criticism from Ricardians over the years. Much of it is unjustified. I can't understand why anyone finds it remarkable that an English medieval queen would be surrounded by ceremony - it came with the job, and she probably couldn't have switched it off if she'd wanted to. Nor is it odd that she should look after her relations - that's what anyone with access to power was expected to do. In fact, it was the whole point of having power.
There's a couple of recent positive biographies of Elizabeth. David Baldwin's Elizabeth Woodville, Sutton Publishing Ltd ISBN 0 7509 3886 2. Also Elizabeth Wydeville, The Slandered Queen by Arlene Okerlund ISBN 0 7524 3384 9. The latter is also available here. Or indeed here. A review of Okerlund's book is here.