Regency England: Links to Reference Books

A Twitter buddy mentioned she'd been hunting forRegency reference books, so I promised to post some that I own. Please note that some of these are expensive, and a great deal of information can be found on the web. I've been collecting these books for several years. You may also be able to get the used versions on Amazon, B&N or Abe books. Also, don't forget to check with your local Indie stores or libraries. Here are some of the reference books in my collection.

The Regency Country House: From the Archives of Country Life [Paperback] John Martin Robinson ($26.56)
An Elegant Madness: High Society in Regency England (Paperback) Venetia Murray  ($10.93)
Vauxhall Gardens: A History (Hardcover) David E. Coke  Alan Borg  ($73.58)
Regency Recollections: Captain Gronow's Guide to Life in London and Paris (Hardcover) Christopher Summerville $33.10
The Lady's Stratagem by Frances Gimble. A Repository of 1820s Directions for the Toilet, Mantua-Making, Stay-Making, Millinery & Etiquette ($70.82)
Jane Austen's Town & Country Style by Susan Watkins and Hugh Palmer (Hardback)  (Out of Print: See Amazon or AbeBooks for Used Version)
Fashion in the Time of Jane Austenby Sarah Jane Downing (Kindle $7.69 and Paperback $10.36)
The Soanes At Home: Domestic Life At Lincoln's Inn Fields by Susan Palmer ($7.92 AbeBooks)
Regency Furniture Designs by John Harris ($30.00 AbeBooks) Also available on Google Books
Our Tempestuous Day: A History of Regency England by Carolly Erickson ($1.00 AbeBooks $5.00 Amazon)
Georgian and Regency Houses Explained by Trevor Yorke (Kindle Edition $7.99 and Paperback is $19.27)

Finally, I found a very helpful link this morning to Social Classes, Money, and Servants in Austen's Society. 
Do you have some favorite reference books or links to online sources for Regency England? If so, please share!
Cheers!