Do you know a child who is blind or has low vision? If so, you can sign up for the American Action Fund for Blind Children & Adults Book Program to receive a FREE braille book every month! You can sign up directly here, or from this page which has a lot of information about the program (found under the “Enroll” section).
NOTE: Please only request this if you can really use the books. I’m sure these books are not cheap and if the offer is abused, they could end it and people who need it will miss out.