Minuteman Library Network has more than 30 member libraries. There's sure to be one near you, and they provide a loan service so that you can get books from any member library delivered to your home library.
The Boston Public Library is not in the Minuteman system. If you live in Boston, that's your system.
Don't forget friends—some have large collections of books just waiting to be used. Ask around. Develop an email list just for the purpose of broadcasting requests for books to use.