Day 6: First Book I bought
I have zero idea. I think it might have been a paperback copy of The Witch of Blackbird Pond. That seems right.
Day 7: Last Book I bought
...Apparently my brain doesn't keep this kind of information. I know I write this stuff down but can't seem to find it.
Used bookstore (McKay's): A huge book haul. The first two Lady Darby series, books from various cozy mystery series, etc.
New bookstore: Final Catcall is the last one I can remember.