These are two separate exhibits, in different parts of the building, although books from one have occasionally migrated to the other.
For anyone interested in seeing lists of titles included in both displays, along with book cover images and links to publisher blurbs, they're online at my library's website: Dust Bowl Fiction and Downton Abbey Display.
And! I have a new image at the top of the blog, a photo of Bamburgh Castle in Northumberland, taken during our visit there in September 2014. An early name for Bamburgh was Bebbanburg, which fans of Bernard Cornwell's Saxon novels will recognize as the home of Uhtred. Check out my husband's Flickr page for more dramatic pics of Bamburgh.