The founder and director of this organization, Dr. Artika Tyner, is a law professor at the University of St. Thomas, Minnesota. She had asked me if I would like to have my books sold by her organization.
She got to know about my books in 2018 when we both attended a fundraising event in Coon Rapids, Minnesota. She bought a numbest of copies and used the "Africans and Americans" book on a program in which she took Americans to Ghana. She co-directed this program with Ghanaian educator Monica Habia. After the trip, Monica told me how useful the book had been as a cultural orientation resource for the trip.
You can visit the website of Planting People Growing Justice. The two books are available in Tanzania as well, from Soma Book Cafe and A Novel Idea.