Bookshelf list (JSON): https://www.googleapis.com/books/v1/users/116060606580564301833/bookshelves
Bookshelf volumes (JSON): https://www.googleapis.com/books/v1/users/116060606580564301833/bookshelves/1001/volumes
Bookshelf direct link: https://books.google.com/books?uid=116060606580564301833&as_coll=1001