HollowSquareBooks.com is a small webshop dedicated to offering a unique selection of books focused on shape note singing and its rich history. Based in Caldwell County, Texas, the site ensures that all listed books are in-stock and ready to ship to customers. In addition to books, Hollow Square Books also offers custom-made t-shirts, which are produced upon order. If customers have any questions or need assistance, they are encouraged to reach out for support.