According to West Virginia University, a Doctor of Letters degree is one of the highest degrees conferred upon a degree candidate. It is part of a larger list of honorary degrees, and is also known as Doctor of Humane Letters.
Graduates seeking the Doctor of Letters degree are typically graduates of the awarding university, or have a formal relationship of some type with the university. Additionally, the Doctor of Letters degree is reserved only for individuals who have the highest level of knowledge in their chosen subject matter. The Doctor of Letters degree is conferred on an honorary basis only.