Reading State by State

A few days ago I was procrastinating and instead of doing the editing I needed to do, I decided to tackle the details of one of my reading challenges for this year, the State by State Challenge. I knew I'd never finish this in one year. Two will take some doing, and three is more realistic (although I'd really love to do two.) I was disappointed with my showing so far (10 with nearly half the year finished, and those are mostly the easy states) so I wanted to see what options I had out there for the remaining 40 states. Luckily, Goodreads has the setting listed for some (but not even half) of my books. It's a starting point but a lot of books had me stumped, based solely on description and reviews.

Some states have oodles of options (Maine, Missouri, Washington) and some really just have one (Hawaii, for which I have listed Hawaii by Michener; Rhode Island, for which I have the Winner of the National Book Award by Jincy Willett). I was pleasantly surprised to find already on my TBR list, a book set in West Virginia, New Hampshire, and Utah, although only one each. What I need help with are the states for which I have nothing: Arkansas, Delaware, Nevada, and South Dakota. For a few states, there was nothing on my To Read list, but one that has been on my radar in the past, like Angle of Repose by Wallace Stegner for Idaho and Attachments by Rainbow Rowell for Nebraska. Does anyone have any suggestions for me for these hard states? Others where I only have a book not on my TBR but looks kinda okay: New Mexico, North Dakota, and Oklahoma. Any suggestions?