Edgar Allan Poe Comparison Resources?

I have selected the literary works "Annabel Lee" and "The Raven" by Edgar Allan Poe to do a research paper and oral report on the comparison/contrast of the two poems. Can anyone suggest some websites, books, etc. that either yze each poem separately or compare them together? I am not trying to make anyone do my homework for me... I am simply looking for reliable resources to give my report a good backbone.