This guide contains resources for undoing the harm caused by the Doctrine of Discovery (also known as legal concept of terra nullius). It also lists materials that have promoted the Doctrine of Discovery over time, which should be used with caution.
Bock, Cherice. “Friends and Watershed Discipleship: Reconciling with People and the Land in Light of the Doctrine of Discovery.” Quaker Religious Thought 134 (March 2020): 35–46.