Boo! Books are back at your local Wendy's restaurant. There is also a limited quantity available for purchase online through the Foundation. For just $1, you can help find permanent families for children waiting in foster care and enjoy five free Jr. Frosty treats through December 31, 2022. Boo! Books are valid only at participating locations in the United States. For every Boo! Book purchased, 85 will support the Dave Thomas Foundation for Adoption's mission.