We are in the process of furnishing our house, and Susan's books are all we need to choose what we want. The problem is, loving someone's bar stools and seeing the perfect entertainment unit in print isn't enough to tell you where the owners got them. I wish there had been a furniture credit section in the books, similar to the 'resources' section of home-type magazines.
You're not alone in this sentiment. I can't tell you how many times we've been asked where we got the fruit bowl on the cover of The Not So Big House. Unfortunately, Sarah's books are different from magazines in that they don't require that houses be brand new to be featured, so products and furniture that appear within the pages often are no longer available. Because of the demand for this information from magazine readers, magazines usually require the houses and the furnishings to be fairly new.
I'm sorry the information isn't available, but a link that Sarah often recommends to people she's working with is http://www.homeportfolio.com. There's a lot of cool stuff there that you might find suitable for your needs.