We are a non-profit organization on a mission to grow and sustain a community of #readers, #writers and #thinkers in #Philadelphia. Tree House Books is growing & sustaining a community of readers, writers, and thinkers in Philadelphia, PA Tree House Books is on a mission to grow and sustain a community of readers, writers, and thinkers in Philadelphia. Founded in 2005, our vision is that every child has access to books and every opportunity to fulfill their dreams. We are a Giving Library and Literacy Center in North Philadelphia with a dual purpose: we provide free books to the community, and Out of School Time (OST) programs that increase literacy skills, and promote a lifelong love of reading and writing in children from their earliest moments, through high school, and beyond.