Hi -- Not sure if I can help, but we do have a strong moving dolly, upright type, large air-filled tires, ideal for moving boxes of books, bookcases in their boxes, and even empty bookcases. We'd be happy to loan it to you for the duration of your move(s).

I can bring it by this weekend anytime (although I expect you're out of town as I type, but you can drop me an email to have it show up at either house to be ready for you.)