I may be late to the table, but just discovered this morning a new Regency site: Nancy Mayer ~ Regency Researcher. Nancy is gradually putting all her many-years worth of Regency and Jane Austen expertise onto her website, and we will be the grateful benefactors of her knowledge. There is an excellent bibliography, a series of links, and the option to ask her any question you might have on the period.
Here is the Subject Index:
And remember to check back often as she continues to add information.
Thank you Nancy, for this lovely new addition to the online Regency world! [and a thank you to Susanna Ives for hosting Nancy on her website: Susanna Ives ~ Regency Romance Writer!]