A Too Convenient Marriage, the hero, Justin Connors, wants to open a wine shop. While I was doing research on wine shops in Regency England, I ran across the history of Berry Bros. & Rudd in St. James's Street London. I relied on pictures of the interior to help me accurately describe how a wine shop in the Regency era would have looked.
The shop has been in London, in its present location since 1698. Although it has changed hands a few times since then, it's success hearkens back to the Widow Bourne who's keen sense of business (much like the keen sense of business the heroines in my Business of Marriage series posses) is the one who really made it into a business which has withstood the test of time.
You can read more about the shop's great history by visiting the Barry Bros. & Rudd website at at http://www.bbr.com/about/london-coffee-scales